./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/unroll-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a4cca88acec68e5dbb90cd5700ef248bb5273dc097847f9475a683bfbdc7b189 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:44:20,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:44:20,544 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 04:44:20,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:44:20,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:44:20,601 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:44:20,602 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:44:20,602 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:44:20,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:44:20,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:44:20,605 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:44:20,605 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:44:20,606 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:44:20,606 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:44:20,608 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:44:20,609 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:44:20,609 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:44:20,610 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:44:20,610 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:44:20,610 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:44:20,611 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:44:20,615 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:44:20,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 04:44:20,616 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 04:44:20,616 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:44:20,616 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:44:20,617 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:44:20,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:44:20,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:44:20,618 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 04:44:20,618 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 04:44:20,618 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 04:44:20,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:44:20,621 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 04:44:20,621 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:44:20,622 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 04:44:20,623 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:44:20,623 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:44:20,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:44:20,624 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:44:20,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:44:20,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:44:20,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:44:20,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:44:20,626 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:44:20,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:44:20,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:44:20,627 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:44:20,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:44:20,627 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4cca88acec68e5dbb90cd5700ef248bb5273dc097847f9475a683bfbdc7b189 [2024-11-09 04:44:20,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:44:21,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:44:21,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:44:21,021 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:44:21,022 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:44:21,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/weaver/unroll-3.wvr.c Unable to find full path for "g++" [2024-11-09 04:44:23,047 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:44:23,294 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:44:23,295 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/sv-benchmarks/c/weaver/unroll-3.wvr.c [2024-11-09 04:44:23,306 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/data/7b761bb93/b62736d6d4814148bcf514e93e98ddd9/FLAGefe470d28 [2024-11-09 04:44:23,627 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/data/7b761bb93/b62736d6d4814148bcf514e93e98ddd9 [2024-11-09 04:44:23,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:44:23,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:44:23,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:44:23,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:44:23,648 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:44:23,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:44:23" (1/1) ... [2024-11-09 04:44:23,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd288ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:44:23, skipping insertion in model container [2024-11-09 04:44:23,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:44:23" (1/1) ... [2024-11-09 04:44:23,682 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:44:24,036 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:44:24,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:44:24,057 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:44:24,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:44:24,127 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:44:24,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:44:24 WrapperNode [2024-11-09 04:44:24,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:44:24,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:44:24,130 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:44:24,130 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:44:24,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:44:24" (1/1) ... [2024-11-09 04:44:24,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:44:24" (1/1) ... [2024-11-09 04:44:24,190 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 136 [2024-11-09 04:44:24,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:44:24,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:44:24,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:44:24,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:44:24,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:44:24" (1/1) ... [2024-11-09 04:44:24,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:44:24" (1/1) ... [2024-11-09 04:44:24,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:44:24" (1/1) ... [2024-11-09 04:44:24,216 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:44:24" (1/1) ... [2024-11-09 04:44:24,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:44:24" (1/1) ... [2024-11-09 04:44:24,232 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:44:24" (1/1) ... [2024-11-09 04:44:24,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:44:24" (1/1) ... [2024-11-09 04:44:24,235 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:44:24" (1/1) ... [2024-11-09 04:44:24,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:44:24,239 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:44:24,239 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:44:24,240 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:44:24,241 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:44:24" (1/1) ... [2024-11-09 04:44:24,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:44:24,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:44:24,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:44:24,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:44:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:44:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 04:44:24,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 04:44:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 04:44:24,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 04:44:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:44:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 04:44:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 04:44:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:44:24,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:44:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 04:44:24,345 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 04:44:24,508 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:44:24,511 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:44:24,931 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 04:44:24,931 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:44:25,265 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:44:25,266 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 04:44:25,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:44:25 BoogieIcfgContainer [2024-11-09 04:44:25,267 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:44:25,270 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:44:25,270 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:44:25,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:44:25,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:44:23" (1/3) ... [2024-11-09 04:44:25,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b6e218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:44:25, skipping insertion in model container [2024-11-09 04:44:25,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:44:24" (2/3) ... [2024-11-09 04:44:25,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b6e218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:44:25, skipping insertion in model container [2024-11-09 04:44:25,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:44:25" (3/3) ... [2024-11-09 04:44:25,278 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-3.wvr.c [2024-11-09 04:44:25,300 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:44:25,301 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-09 04:44:25,301 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 04:44:25,398 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 04:44:25,440 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 46 transitions, 106 flow [2024-11-09 04:44:25,498 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 267 states, 243 states have (on average 2.8065843621399176) internal successors, (682), 266 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:25,532 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:44:25,541 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7114eaf4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:44:25,541 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-09 04:44:25,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 267 states, 243 states have (on average 2.8065843621399176) internal successors, (682), 266 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:25,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 04:44:25,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:25,552 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 04:44:25,553 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:25,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:25,557 INFO L85 PathProgramCache]: Analyzing trace with hash 14950824, now seen corresponding path program 1 times [2024-11-09 04:44:25,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:25,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339196065] [2024-11-09 04:44:25,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:25,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:25,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:25,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339196065] [2024-11-09 04:44:25,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339196065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:44:25,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:44:25,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 04:44:25,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466368955] [2024-11-09 04:44:25,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:44:25,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:44:25,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:25,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:44:25,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:44:25,949 INFO L87 Difference]: Start difference. First operand has 267 states, 243 states have (on average 2.8065843621399176) internal successors, (682), 266 states have internal predecessors, (682), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:26,053 INFO L93 Difference]: Finished difference Result 267 states and 682 transitions. [2024-11-09 04:44:26,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:44:26,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 04:44:26,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:26,075 INFO L225 Difference]: With dead ends: 267 [2024-11-09 04:44:26,075 INFO L226 Difference]: Without dead ends: 264 [2024-11-09 04:44:26,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:44:26,083 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:26,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 29 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:44:26,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-09 04:44:26,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-11-09 04:44:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 242 states have (on average 2.8057851239669422) internal successors, (679), 263 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:26,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 679 transitions. [2024-11-09 04:44:26,178 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 679 transitions. Word has length 4 [2024-11-09 04:44:26,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:26,179 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 679 transitions. [2024-11-09 04:44:26,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:26,179 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 679 transitions. [2024-11-09 04:44:26,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 04:44:26,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:26,180 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 04:44:26,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:44:26,181 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:26,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:26,183 INFO L85 PathProgramCache]: Analyzing trace with hash 14950825, now seen corresponding path program 1 times [2024-11-09 04:44:26,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:26,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114545395] [2024-11-09 04:44:26,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:26,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:26,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:26,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114545395] [2024-11-09 04:44:26,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114545395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:44:26,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:44:26,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:44:26,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209736461] [2024-11-09 04:44:26,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:44:26,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:44:26,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:26,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:44:26,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:44:26,588 INFO L87 Difference]: Start difference. First operand 264 states and 679 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:26,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:26,771 INFO L93 Difference]: Finished difference Result 527 states and 1357 transitions. [2024-11-09 04:44:26,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:44:26,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 04:44:26,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:26,775 INFO L225 Difference]: With dead ends: 527 [2024-11-09 04:44:26,778 INFO L226 Difference]: Without dead ends: 267 [2024-11-09 04:44:26,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:44:26,781 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:26,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 40 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:44:26,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-09 04:44:26,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2024-11-09 04:44:26,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 245 states have (on average 2.783673469387755) internal successors, (682), 266 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:26,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 682 transitions. [2024-11-09 04:44:26,812 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 682 transitions. Word has length 4 [2024-11-09 04:44:26,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:26,812 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 682 transitions. [2024-11-09 04:44:26,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 682 transitions. [2024-11-09 04:44:26,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 04:44:26,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:26,814 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 04:44:26,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 04:44:26,814 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:26,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:26,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1276128601, now seen corresponding path program 1 times [2024-11-09 04:44:26,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:26,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831622644] [2024-11-09 04:44:26,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:26,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:27,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:27,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831622644] [2024-11-09 04:44:27,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831622644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:44:27,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126946854] [2024-11-09 04:44:27,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:27,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:44:27,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:44:27,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:44:27,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:44:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:27,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 04:44:27,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:44:27,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 04:44:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:27,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:44:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:28,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126946854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:44:28,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [188498224] [2024-11-09 04:44:28,165 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:259) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:44:28,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:44:28,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-09 04:44:28,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789157515] [2024-11-09 04:44:28,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:44:28,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 04:44:28,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:28,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 04:44:28,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:44:28,171 INFO L87 Difference]: Start difference. First operand 267 states and 682 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:28,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:28,463 INFO L93 Difference]: Finished difference Result 526 states and 1354 transitions. [2024-11-09 04:44:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:44:28,464 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 04:44:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:28,467 INFO L225 Difference]: With dead ends: 526 [2024-11-09 04:44:28,469 INFO L226 Difference]: Without dead ends: 266 [2024-11-09 04:44:28,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:44:28,474 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:28,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:44:28,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-09 04:44:28,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2024-11-09 04:44:28,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 243 states have (on average 2.7901234567901234) internal successors, (678), 263 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:28,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 678 transitions. [2024-11-09 04:44:28,488 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 678 transitions. Word has length 7 [2024-11-09 04:44:28,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:28,488 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 678 transitions. [2024-11-09 04:44:28,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:28,489 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 678 transitions. [2024-11-09 04:44:28,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 04:44:28,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:28,490 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:44:28,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 04:44:28,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:44:28,691 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:28,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:28,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1915921949, now seen corresponding path program 1 times [2024-11-09 04:44:28,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:28,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950317562] [2024-11-09 04:44:28,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:28,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:28,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:28,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950317562] [2024-11-09 04:44:28,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950317562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:44:28,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:44:28,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:44:28,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762263359] [2024-11-09 04:44:28,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:44:28,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:44:28,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:28,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:44:28,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:44:28,799 INFO L87 Difference]: Start difference. First operand 264 states and 678 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:28,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:28,877 INFO L93 Difference]: Finished difference Result 264 states and 678 transitions. [2024-11-09 04:44:28,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:44:28,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 04:44:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:28,880 INFO L225 Difference]: With dead ends: 264 [2024-11-09 04:44:28,881 INFO L226 Difference]: Without dead ends: 189 [2024-11-09 04:44:28,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:44:28,885 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:28,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 18 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:44:28,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-09 04:44:28,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-09 04:44:28,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 181 states have (on average 2.679558011049724) internal successors, (485), 188 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 485 transitions. [2024-11-09 04:44:28,905 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 485 transitions. Word has length 11 [2024-11-09 04:44:28,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:28,906 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 485 transitions. [2024-11-09 04:44:28,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:28,906 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 485 transitions. [2024-11-09 04:44:28,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 04:44:28,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:28,907 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:44:28,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 04:44:28,907 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:28,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:28,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1915921948, now seen corresponding path program 1 times [2024-11-09 04:44:28,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:28,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405480180] [2024-11-09 04:44:28,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:28,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:29,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:29,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405480180] [2024-11-09 04:44:29,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405480180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:44:29,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289077774] [2024-11-09 04:44:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:29,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:44:29,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:44:29,202 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:44:29,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 04:44:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:29,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 04:44:29,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:44:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:29,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:44:29,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 04:44:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:29,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289077774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:44:29,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [210667502] [2024-11-09 04:44:29,662 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:44:29,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:44:29,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-09 04:44:29,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877122346] [2024-11-09 04:44:29,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:44:29,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 04:44:29,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:29,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 04:44:29,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:44:29,669 INFO L87 Difference]: Start difference. First operand 189 states and 485 transitions. Second operand has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:29,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:29,954 INFO L93 Difference]: Finished difference Result 349 states and 903 transitions. [2024-11-09 04:44:29,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:44:29,955 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 04:44:29,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:29,958 INFO L225 Difference]: With dead ends: 349 [2024-11-09 04:44:29,959 INFO L226 Difference]: Without dead ends: 325 [2024-11-09 04:44:29,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:44:29,961 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:29,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 57 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:44:29,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-11-09 04:44:29,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 261. [2024-11-09 04:44:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 253 states have (on average 2.8300395256916997) internal successors, (716), 260 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 716 transitions. [2024-11-09 04:44:29,980 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 716 transitions. Word has length 11 [2024-11-09 04:44:29,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:29,981 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 716 transitions. [2024-11-09 04:44:29,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:29,981 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 716 transitions. [2024-11-09 04:44:29,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 04:44:29,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:29,983 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:44:30,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 04:44:30,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:44:30,190 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:30,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:30,191 INFO L85 PathProgramCache]: Analyzing trace with hash 475700414, now seen corresponding path program 1 times [2024-11-09 04:44:30,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:30,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56178991] [2024-11-09 04:44:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:30,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:30,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:30,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:30,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56178991] [2024-11-09 04:44:30,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56178991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:44:30,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820274928] [2024-11-09 04:44:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:30,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:44:30,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:44:30,504 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:44:30,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 04:44:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:30,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 04:44:30,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:44:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:30,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:44:30,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 04:44:30,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:30,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820274928] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:44:30,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2044680188] [2024-11-09 04:44:30,968 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:44:30,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:44:30,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-09 04:44:30,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481128074] [2024-11-09 04:44:30,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:44:30,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 04:44:30,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:30,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 04:44:30,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:44:30,971 INFO L87 Difference]: Start difference. First operand 261 states and 716 transitions. Second operand has 11 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:31,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:31,147 INFO L93 Difference]: Finished difference Result 392 states and 1090 transitions. [2024-11-09 04:44:31,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:44:31,148 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 04:44:31,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:31,151 INFO L225 Difference]: With dead ends: 392 [2024-11-09 04:44:31,152 INFO L226 Difference]: Without dead ends: 371 [2024-11-09 04:44:31,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:44:31,155 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 63 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:31,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 31 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:44:31,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-09 04:44:31,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 324. [2024-11-09 04:44:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 316 states have (on average 2.949367088607595) internal successors, (932), 323 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:31,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 932 transitions. [2024-11-09 04:44:31,171 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 932 transitions. Word has length 13 [2024-11-09 04:44:31,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:31,174 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 932 transitions. [2024-11-09 04:44:31,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:31,174 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 932 transitions. [2024-11-09 04:44:31,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 04:44:31,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:31,175 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:44:31,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 04:44:31,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 04:44:31,376 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:31,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:31,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1409869655, now seen corresponding path program 1 times [2024-11-09 04:44:31,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:31,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302571842] [2024-11-09 04:44:31,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:31,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:31,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:44:31,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:31,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302571842] [2024-11-09 04:44:31,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302571842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:44:31,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768009844] [2024-11-09 04:44:31,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:31,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:44:31,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:44:31,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:44:31,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 04:44:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:31,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:44:31,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:44:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:32,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:44:32,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2024-11-09 04:44:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:32,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768009844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:44:32,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [271724892] [2024-11-09 04:44:32,632 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:44:32,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:44:32,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2024-11-09 04:44:32,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477447666] [2024-11-09 04:44:32,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:44:32,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 04:44:32,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:32,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 04:44:32,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:44:32,636 INFO L87 Difference]: Start difference. First operand 324 states and 932 transitions. Second operand has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:33,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:33,478 INFO L93 Difference]: Finished difference Result 720 states and 2028 transitions. [2024-11-09 04:44:33,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:44:33,479 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 04:44:33,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:33,485 INFO L225 Difference]: With dead ends: 720 [2024-11-09 04:44:33,485 INFO L226 Difference]: Without dead ends: 690 [2024-11-09 04:44:33,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2024-11-09 04:44:33,487 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 238 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:33,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 137 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:44:33,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2024-11-09 04:44:33,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 204. [2024-11-09 04:44:33,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 200 states have (on average 2.76) internal successors, (552), 203 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 552 transitions. [2024-11-09 04:44:33,504 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 552 transitions. Word has length 14 [2024-11-09 04:44:33,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:33,505 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 552 transitions. [2024-11-09 04:44:33,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:33,505 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 552 transitions. [2024-11-09 04:44:33,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 04:44:33,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:33,507 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:44:33,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 04:44:33,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 04:44:33,710 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:33,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:33,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1861811454, now seen corresponding path program 1 times [2024-11-09 04:44:33,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:33,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355595343] [2024-11-09 04:44:33,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:33,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:33,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:33,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355595343] [2024-11-09 04:44:33,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355595343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:44:33,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637215116] [2024-11-09 04:44:33,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:33,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:44:33,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:44:33,980 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:44:33,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 04:44:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:34,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:44:34,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:44:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:34,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:44:34,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 04:44:34,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:34,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637215116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:44:34,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [374605116] [2024-11-09 04:44:34,701 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:44:34,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:44:34,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-09 04:44:34,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805775846] [2024-11-09 04:44:34,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:44:34,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 04:44:34,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:34,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 04:44:34,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:44:34,705 INFO L87 Difference]: Start difference. First operand 204 states and 552 transitions. Second operand has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:35,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:35,308 INFO L93 Difference]: Finished difference Result 330 states and 900 transitions. [2024-11-09 04:44:35,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:44:35,309 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 04:44:35,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:35,313 INFO L225 Difference]: With dead ends: 330 [2024-11-09 04:44:35,314 INFO L226 Difference]: Without dead ends: 291 [2024-11-09 04:44:35,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2024-11-09 04:44:35,316 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 121 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:35,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 87 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:44:35,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-09 04:44:35,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 126. [2024-11-09 04:44:35,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.576) internal successors, (322), 125 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:35,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 322 transitions. [2024-11-09 04:44:35,328 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 322 transitions. Word has length 14 [2024-11-09 04:44:35,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:35,329 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 322 transitions. [2024-11-09 04:44:35,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:35,329 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 322 transitions. [2024-11-09 04:44:35,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 04:44:35,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:35,335 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:44:35,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 04:44:35,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 04:44:35,539 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:35,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:35,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1113352779, now seen corresponding path program 1 times [2024-11-09 04:44:35,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:35,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524054402] [2024-11-09 04:44:35,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:35,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:44:35,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:35,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524054402] [2024-11-09 04:44:35,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524054402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:44:35,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:44:35,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:44:35,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290686103] [2024-11-09 04:44:35,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:44:35,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:44:35,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:35,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:44:35,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:44:35,616 INFO L87 Difference]: Start difference. First operand 126 states and 322 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:35,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:35,668 INFO L93 Difference]: Finished difference Result 215 states and 559 transitions. [2024-11-09 04:44:35,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:44:35,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 04:44:35,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:35,671 INFO L225 Difference]: With dead ends: 215 [2024-11-09 04:44:35,671 INFO L226 Difference]: Without dead ends: 202 [2024-11-09 04:44:35,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:44:35,672 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:35,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 16 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:44:35,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-09 04:44:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 177. [2024-11-09 04:44:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.602272727272727) internal successors, (458), 176 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:35,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 458 transitions. [2024-11-09 04:44:35,687 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 458 transitions. Word has length 20 [2024-11-09 04:44:35,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:35,688 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 458 transitions. [2024-11-09 04:44:35,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:35,688 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 458 transitions. [2024-11-09 04:44:35,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 04:44:35,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:35,689 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:44:35,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 04:44:35,690 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:35,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:35,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2046628504, now seen corresponding path program 1 times [2024-11-09 04:44:35,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:35,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590376554] [2024-11-09 04:44:35,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:35,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:44:35,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:35,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590376554] [2024-11-09 04:44:35,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590376554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:44:35,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:44:35,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:44:35,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406992907] [2024-11-09 04:44:35,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:44:35,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:44:35,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:35,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:44:35,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:44:35,850 INFO L87 Difference]: Start difference. First operand 177 states and 458 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:36,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:36,055 INFO L93 Difference]: Finished difference Result 365 states and 935 transitions. [2024-11-09 04:44:36,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:44:36,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-09 04:44:36,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:36,060 INFO L225 Difference]: With dead ends: 365 [2024-11-09 04:44:36,060 INFO L226 Difference]: Without dead ends: 269 [2024-11-09 04:44:36,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:44:36,061 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 39 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:36,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 20 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:44:36,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-09 04:44:36,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 211. [2024-11-09 04:44:36,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 2.638095238095238) internal successors, (554), 210 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:36,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 554 transitions. [2024-11-09 04:44:36,070 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 554 transitions. Word has length 23 [2024-11-09 04:44:36,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:36,071 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 554 transitions. [2024-11-09 04:44:36,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 554 transitions. [2024-11-09 04:44:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 04:44:36,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:36,072 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:44:36,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 04:44:36,073 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:36,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:36,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1596387096, now seen corresponding path program 2 times [2024-11-09 04:44:36,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:36,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384636688] [2024-11-09 04:44:36,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:36,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:44:36,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:36,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384636688] [2024-11-09 04:44:36,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384636688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:44:36,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:44:36,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:44:36,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72031054] [2024-11-09 04:44:36,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:44:36,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:44:36,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:36,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:44:36,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:44:36,273 INFO L87 Difference]: Start difference. First operand 211 states and 554 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:36,454 INFO L93 Difference]: Finished difference Result 346 states and 894 transitions. [2024-11-09 04:44:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:44:36,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-09 04:44:36,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:36,458 INFO L225 Difference]: With dead ends: 346 [2024-11-09 04:44:36,458 INFO L226 Difference]: Without dead ends: 301 [2024-11-09 04:44:36,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:44:36,459 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 36 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:36,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 22 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:44:36,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-09 04:44:36,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 243. [2024-11-09 04:44:36,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 2.6363636363636362) internal successors, (638), 242 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:36,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 638 transitions. [2024-11-09 04:44:36,471 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 638 transitions. Word has length 23 [2024-11-09 04:44:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:36,473 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 638 transitions. [2024-11-09 04:44:36,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:36,474 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 638 transitions. [2024-11-09 04:44:36,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 04:44:36,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:36,475 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:44:36,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 04:44:36,475 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:36,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:36,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1990880252, now seen corresponding path program 3 times [2024-11-09 04:44:36,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:36,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272324568] [2024-11-09 04:44:36,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:36,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:44:36,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:36,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272324568] [2024-11-09 04:44:36,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272324568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:44:36,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:44:36,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:44:36,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311604336] [2024-11-09 04:44:36,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:44:36,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:44:36,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:36,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:44:36,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:44:36,637 INFO L87 Difference]: Start difference. First operand 243 states and 638 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:36,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:36,862 INFO L93 Difference]: Finished difference Result 369 states and 972 transitions. [2024-11-09 04:44:36,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 04:44:36,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-09 04:44:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:36,865 INFO L225 Difference]: With dead ends: 369 [2024-11-09 04:44:36,866 INFO L226 Difference]: Without dead ends: 319 [2024-11-09 04:44:36,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:44:36,867 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 55 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:36,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 17 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:44:36,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-09 04:44:36,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 192. [2024-11-09 04:44:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.575916230366492) internal successors, (492), 191 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:36,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 492 transitions. [2024-11-09 04:44:36,877 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 492 transitions. Word has length 23 [2024-11-09 04:44:36,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:36,878 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 492 transitions. [2024-11-09 04:44:36,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:36,879 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 492 transitions. [2024-11-09 04:44:36,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 04:44:36,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:36,880 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:44:36,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 04:44:36,882 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:36,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:36,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1297816282, now seen corresponding path program 4 times [2024-11-09 04:44:36,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:36,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327464859] [2024-11-09 04:44:36,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:36,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:44:37,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:37,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327464859] [2024-11-09 04:44:37,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327464859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:44:37,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:44:37,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:44:37,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853505378] [2024-11-09 04:44:37,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:44:37,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:44:37,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:37,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:44:37,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:44:37,006 INFO L87 Difference]: Start difference. First operand 192 states and 492 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:37,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:37,174 INFO L93 Difference]: Finished difference Result 313 states and 798 transitions. [2024-11-09 04:44:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:44:37,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-09 04:44:37,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:37,177 INFO L225 Difference]: With dead ends: 313 [2024-11-09 04:44:37,178 INFO L226 Difference]: Without dead ends: 268 [2024-11-09 04:44:37,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:44:37,179 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:37,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 21 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:44:37,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-09 04:44:37,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 228. [2024-11-09 04:44:37,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 2.6255506607929515) internal successors, (596), 227 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 596 transitions. [2024-11-09 04:44:37,189 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 596 transitions. Word has length 23 [2024-11-09 04:44:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:37,189 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 596 transitions. [2024-11-09 04:44:37,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 596 transitions. [2024-11-09 04:44:37,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 04:44:37,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:37,191 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:44:37,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 04:44:37,192 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:37,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:37,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1739709930, now seen corresponding path program 5 times [2024-11-09 04:44:37,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:37,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974330760] [2024-11-09 04:44:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:44:37,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:37,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974330760] [2024-11-09 04:44:37,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974330760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:44:37,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:44:37,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:44:37,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753646078] [2024-11-09 04:44:37,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:44:37,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:44:37,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:37,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:44:37,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:44:37,350 INFO L87 Difference]: Start difference. First operand 228 states and 596 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:37,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:37,498 INFO L93 Difference]: Finished difference Result 291 states and 751 transitions. [2024-11-09 04:44:37,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:44:37,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-09 04:44:37,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:37,501 INFO L225 Difference]: With dead ends: 291 [2024-11-09 04:44:37,501 INFO L226 Difference]: Without dead ends: 266 [2024-11-09 04:44:37,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:44:37,503 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:37,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 18 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:44:37,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-09 04:44:37,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 196. [2024-11-09 04:44:37,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.5743589743589745) internal successors, (502), 195 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 502 transitions. [2024-11-09 04:44:37,512 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 502 transitions. Word has length 23 [2024-11-09 04:44:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:37,513 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 502 transitions. [2024-11-09 04:44:37,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 502 transitions. [2024-11-09 04:44:37,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 04:44:37,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:37,514 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:44:37,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 04:44:37,515 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:37,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:37,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1086790171, now seen corresponding path program 1 times [2024-11-09 04:44:37,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:37,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611563501] [2024-11-09 04:44:37,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:37,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:38,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:44:38,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:38,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611563501] [2024-11-09 04:44:38,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611563501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:44:38,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348150321] [2024-11-09 04:44:38,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:38,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:44:38,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:44:38,306 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:44:38,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 04:44:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:38,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 04:44:38,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:44:38,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 04:44:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:38,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:44:39,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2024-11-09 04:44:39,701 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-09 04:44:39,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 91 [2024-11-09 04:44:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:41,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348150321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:44:41,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1761329553] [2024-11-09 04:44:41,224 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:44:41,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:44:41,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 26 [2024-11-09 04:44:41,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542828965] [2024-11-09 04:44:41,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:44:41,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 04:44:41,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:41,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 04:44:41,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2024-11-09 04:44:41,228 INFO L87 Difference]: Start difference. First operand 196 states and 502 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 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) [2024-11-09 04:44:45,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:45,990 INFO L93 Difference]: Finished difference Result 1272 states and 3421 transitions. [2024-11-09 04:44:45,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-09 04:44:45,991 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 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) Word has length 28 [2024-11-09 04:44:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:45,996 INFO L225 Difference]: With dead ends: 1272 [2024-11-09 04:44:45,997 INFO L226 Difference]: Without dead ends: 814 [2024-11-09 04:44:45,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=801, Invalid=3755, Unknown=0, NotChecked=0, Total=4556 [2024-11-09 04:44:46,000 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 549 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:46,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 21 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 04:44:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2024-11-09 04:44:46,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 487. [2024-11-09 04:44:46,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 2.7098765432098766) internal successors, (1317), 486 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1317 transitions. [2024-11-09 04:44:46,021 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1317 transitions. Word has length 28 [2024-11-09 04:44:46,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:46,022 INFO L471 AbstractCegarLoop]: Abstraction has 487 states and 1317 transitions. [2024-11-09 04:44:46,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 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) [2024-11-09 04:44:46,022 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1317 transitions. [2024-11-09 04:44:46,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 04:44:46,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:46,024 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:44:46,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 04:44:46,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 04:44:46,229 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:46,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:46,230 INFO L85 PathProgramCache]: Analyzing trace with hash 771889816, now seen corresponding path program 2 times [2024-11-09 04:44:46,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:46,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931348112] [2024-11-09 04:44:46,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:46,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:46,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:44:46,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:46,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931348112] [2024-11-09 04:44:46,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931348112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:44:46,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164100275] [2024-11-09 04:44:46,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:44:46,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:44:46,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:44:46,528 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:44:46,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 04:44:46,664 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 04:44:46,664 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:44:46,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 04:44:46,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:44:46,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-09 04:44:47,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2024-11-09 04:44:47,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 04:44:47,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:44:47,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:44:47,763 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 04:44:47,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2024-11-09 04:44:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:44:48,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164100275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:44:48,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1570100724] [2024-11-09 04:44:48,200 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:44:48,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:44:48,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 22 [2024-11-09 04:44:48,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226229968] [2024-11-09 04:44:48,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:44:48,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 04:44:48,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:48,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 04:44:48,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-09 04:44:48,208 INFO L87 Difference]: Start difference. First operand 487 states and 1317 transitions. Second operand has 22 states, 22 states have (on average 3.8636363636363638) internal successors, (85), 22 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:51,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:51,233 INFO L93 Difference]: Finished difference Result 1171 states and 3247 transitions. [2024-11-09 04:44:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 04:44:51,234 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.8636363636363638) internal successors, (85), 22 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-09 04:44:51,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:51,240 INFO L225 Difference]: With dead ends: 1171 [2024-11-09 04:44:51,240 INFO L226 Difference]: Without dead ends: 690 [2024-11-09 04:44:51,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=399, Invalid=1763, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 04:44:51,243 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 421 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:51,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 27 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 04:44:51,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2024-11-09 04:44:51,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 528. [2024-11-09 04:44:51,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.791271347248577) internal successors, (1471), 527 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:51,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1471 transitions. [2024-11-09 04:44:51,263 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1471 transitions. Word has length 31 [2024-11-09 04:44:51,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:51,263 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 1471 transitions. [2024-11-09 04:44:51,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.8636363636363638) internal successors, (85), 22 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:51,264 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1471 transitions. [2024-11-09 04:44:51,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 04:44:51,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:51,266 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:44:51,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 04:44:51,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:44:51,467 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:51,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1125307207, now seen corresponding path program 3 times [2024-11-09 04:44:51,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:51,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763113644] [2024-11-09 04:44:51,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:51,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:53,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:53,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763113644] [2024-11-09 04:44:53,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763113644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:44:53,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651677936] [2024-11-09 04:44:53,787 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:44:53,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:44:53,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:44:53,790 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:44:53,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 04:44:53,915 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:44:53,915 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:44:53,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 04:44:53,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:44:54,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:44:54,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 45 [2024-11-09 04:44:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:44:54,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:44:54,683 INFO L349 Elim1Store]: treesize reduction 15, result has 90.2 percent of original size [2024-11-09 04:44:54,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 173 [2024-11-09 04:44:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 04:44:55,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651677936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:44:55,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1369678186] [2024-11-09 04:44:55,008 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:44:55,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:44:55,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 7] total 26 [2024-11-09 04:44:55,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596850298] [2024-11-09 04:44:55,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:44:55,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 04:44:55,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:44:55,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 04:44:55,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2024-11-09 04:44:55,011 INFO L87 Difference]: Start difference. First operand 528 states and 1471 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:56,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:44:56,536 INFO L93 Difference]: Finished difference Result 1443 states and 3892 transitions. [2024-11-09 04:44:56,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 04:44:56,536 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 04:44:56,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:44:56,548 INFO L225 Difference]: With dead ends: 1443 [2024-11-09 04:44:56,548 INFO L226 Difference]: Without dead ends: 1430 [2024-11-09 04:44:56,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 04:44:56,553 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 234 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:44:56,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 707 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 04:44:56,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2024-11-09 04:44:56,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 692. [2024-11-09 04:44:56,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 2.849493487698987) internal successors, (1969), 691 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:56,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1969 transitions. [2024-11-09 04:44:56,591 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1969 transitions. Word has length 37 [2024-11-09 04:44:56,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:44:56,592 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1969 transitions. [2024-11-09 04:44:56,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:44:56,592 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1969 transitions. [2024-11-09 04:44:56,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 04:44:56,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:44:56,594 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:44:56,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 04:44:56,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 04:44:56,798 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:44:56,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:44:56,799 INFO L85 PathProgramCache]: Analyzing trace with hash 481600731, now seen corresponding path program 4 times [2024-11-09 04:44:56,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:44:56,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610207926] [2024-11-09 04:44:56,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:44:56,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:44:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:44:58,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:44:58,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610207926] [2024-11-09 04:44:58,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610207926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:44:58,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876903277] [2024-11-09 04:44:58,999 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:44:58,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:44:58,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:44:59,001 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:44:59,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 04:44:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:44:59,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 04:44:59,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:44:59,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:44:59,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 45 [2024-11-09 04:44:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:44:59,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:44:59,826 INFO L349 Elim1Store]: treesize reduction 15, result has 90.2 percent of original size [2024-11-09 04:44:59,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 173 [2024-11-09 04:45:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 04:45:00,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876903277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:45:00,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1839065079] [2024-11-09 04:45:00,127 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:45:00,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:45:00,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 7] total 26 [2024-11-09 04:45:00,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165269088] [2024-11-09 04:45:00,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:45:00,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 04:45:00,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:45:00,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 04:45:00,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2024-11-09 04:45:00,134 INFO L87 Difference]: Start difference. First operand 692 states and 1969 transitions. Second operand has 27 states, 27 states have (on average 3.4074074074074074) internal successors, (92), 26 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:45:01,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:01,949 INFO L93 Difference]: Finished difference Result 2562 states and 7201 transitions. [2024-11-09 04:45:01,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-09 04:45:01,950 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.4074074074074074) internal successors, (92), 26 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 04:45:01,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:01,972 INFO L225 Difference]: With dead ends: 2562 [2024-11-09 04:45:01,972 INFO L226 Difference]: Without dead ends: 2538 [2024-11-09 04:45:01,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=271, Invalid=1891, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 04:45:01,975 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 337 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:01,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 617 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 04:45:01,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2024-11-09 04:45:02,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 1509. [2024-11-09 04:45:02,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 3.056366047745358) internal successors, (4609), 1508 states have internal predecessors, (4609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:45:02,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 4609 transitions. [2024-11-09 04:45:02,042 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 4609 transitions. Word has length 37 [2024-11-09 04:45:02,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:02,043 INFO L471 AbstractCegarLoop]: Abstraction has 1509 states and 4609 transitions. [2024-11-09 04:45:02,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.4074074074074074) internal successors, (92), 26 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:45:02,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 4609 transitions. [2024-11-09 04:45:02,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 04:45:02,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:02,046 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:45:02,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 04:45:02,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 04:45:02,251 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:45:02,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:02,251 INFO L85 PathProgramCache]: Analyzing trace with hash -200127005, now seen corresponding path program 5 times [2024-11-09 04:45:02,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:45:02,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821194645] [2024-11-09 04:45:02,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:02,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:45:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:03,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:45:03,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821194645] [2024-11-09 04:45:03,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821194645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:45:03,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983453839] [2024-11-09 04:45:03,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:45:03,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:45:03,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:45:03,958 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:45:03,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 04:45:04,241 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 04:45:04,242 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:45:04,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 04:45:04,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:04,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 04:45:04,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:45:04,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2024-11-09 04:45:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:04,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:45:05,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 81 [2024-11-09 04:45:05,745 INFO L349 Elim1Store]: treesize reduction 5, result has 98.2 percent of original size [2024-11-09 04:45:05,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 13 new quantified variables, introduced 28 case distinctions, treesize of input 1451 treesize of output 1158 [2024-11-09 04:45:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 04:45:59,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983453839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:45:59,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1068631887] [2024-11-09 04:45:59,303 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:45:59,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:45:59,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 30 [2024-11-09 04:45:59,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330086486] [2024-11-09 04:45:59,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:45:59,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 04:45:59,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:45:59,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 04:45:59,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2024-11-09 04:45:59,307 INFO L87 Difference]: Start difference. First operand 1509 states and 4609 transitions. Second operand has 31 states, 31 states have (on average 3.129032258064516) internal successors, (97), 30 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:46:00,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:46:00,275 INFO L93 Difference]: Finished difference Result 2288 states and 6723 transitions. [2024-11-09 04:46:00,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 04:46:00,276 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.129032258064516) internal successors, (97), 30 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 04:46:00,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:46:00,290 INFO L225 Difference]: With dead ends: 2288 [2024-11-09 04:46:00,290 INFO L226 Difference]: Without dead ends: 2264 [2024-11-09 04:46:00,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=269, Invalid=1291, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 04:46:00,292 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 203 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:46:00,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 488 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 04:46:00,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2024-11-09 04:46:00,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1697. [2024-11-09 04:46:00,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1696 states have (on average 3.0902122641509435) internal successors, (5241), 1696 states have internal predecessors, (5241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:46:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 5241 transitions. [2024-11-09 04:46:00,353 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 5241 transitions. Word has length 37 [2024-11-09 04:46:00,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:46:00,355 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 5241 transitions. [2024-11-09 04:46:00,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.129032258064516) internal successors, (97), 30 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:46:00,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 5241 transitions. [2024-11-09 04:46:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 04:46:00,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:46:00,360 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:46:00,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 04:46:00,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:46:00,564 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:46:00,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:46:00,565 INFO L85 PathProgramCache]: Analyzing trace with hash -265155015, now seen corresponding path program 6 times [2024-11-09 04:46:00,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:46:00,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409811876] [2024-11-09 04:46:00,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:00,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:46:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:02,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:46:02,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409811876] [2024-11-09 04:46:02,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409811876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:46:02,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088382793] [2024-11-09 04:46:02,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:46:02,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:46:02,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:46:02,081 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:46:02,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 04:46:02,191 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:46:02,192 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:46:02,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 04:46:02,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:02,763 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:46:02,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 47 [2024-11-09 04:46:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:02,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:03,393 INFO L349 Elim1Store]: treesize reduction 15, result has 90.2 percent of original size [2024-11-09 04:46:03,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 132 treesize of output 189 [2024-11-09 04:46:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:04,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088382793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:04,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [890959782] [2024-11-09 04:46:04,644 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:46:04,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:46:04,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 31 [2024-11-09 04:46:04,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304237549] [2024-11-09 04:46:04,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:46:04,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 04:46:04,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:46:04,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 04:46:04,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2024-11-09 04:46:04,648 INFO L87 Difference]: Start difference. First operand 1697 states and 5241 transitions. Second operand has 32 states, 32 states have (on average 2.71875) internal successors, (87), 31 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:46:05,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:46:05,994 INFO L93 Difference]: Finished difference Result 2953 states and 8925 transitions. [2024-11-09 04:46:05,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 04:46:05,995 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 31 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 04:46:05,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:46:06,009 INFO L225 Difference]: With dead ends: 2953 [2024-11-09 04:46:06,010 INFO L226 Difference]: Without dead ends: 2940 [2024-11-09 04:46:06,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=232, Invalid=1328, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 04:46:06,012 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 173 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:46:06,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 601 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 04:46:06,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2024-11-09 04:46:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2350. [2024-11-09 04:46:06,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2350 states, 2349 states have (on average 3.1936994465730097) internal successors, (7502), 2349 states have internal predecessors, (7502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:46:06,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 7502 transitions. [2024-11-09 04:46:06,092 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 7502 transitions. Word has length 37 [2024-11-09 04:46:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:46:06,093 INFO L471 AbstractCegarLoop]: Abstraction has 2350 states and 7502 transitions. [2024-11-09 04:46:06,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 31 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:46:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 7502 transitions. [2024-11-09 04:46:06,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 04:46:06,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:46:06,099 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:46:06,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 04:46:06,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:46:06,300 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:46:06,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:46:06,300 INFO L85 PathProgramCache]: Analyzing trace with hash -45489587, now seen corresponding path program 7 times [2024-11-09 04:46:06,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:46:06,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892000511] [2024-11-09 04:46:06,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:06,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:46:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:08,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:46:08,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892000511] [2024-11-09 04:46:08,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892000511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:46:08,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174777395] [2024-11-09 04:46:08,231 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:46:08,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:46:08,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:46:08,233 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:46:08,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 04:46:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:08,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 04:46:08,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:08,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:46:08,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 45 [2024-11-09 04:46:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:46:08,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:08,945 INFO L349 Elim1Store]: treesize reduction 15, result has 90.2 percent of original size [2024-11-09 04:46:08,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 173 [2024-11-09 04:46:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 04:46:09,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174777395] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:09,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [492477514] [2024-11-09 04:46:09,194 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:46:09,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:46:09,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 7] total 25 [2024-11-09 04:46:09,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929275166] [2024-11-09 04:46:09,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:46:09,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 04:46:09,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:46:09,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 04:46:09,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-11-09 04:46:09,198 INFO L87 Difference]: Start difference. First operand 2350 states and 7502 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:46:10,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:46:10,649 INFO L93 Difference]: Finished difference Result 4106 states and 12553 transitions. [2024-11-09 04:46:10,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 04:46:10,651 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 04:46:10,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:46:10,675 INFO L225 Difference]: With dead ends: 4106 [2024-11-09 04:46:10,675 INFO L226 Difference]: Without dead ends: 4093 [2024-11-09 04:46:10,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=161, Invalid=1099, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 04:46:10,678 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 208 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:46:10,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 689 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 04:46:10,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2024-11-09 04:46:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 3268. [2024-11-09 04:46:10,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3268 states, 3267 states have (on average 3.243954698500153) internal successors, (10598), 3267 states have internal predecessors, (10598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:46:10,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 10598 transitions. [2024-11-09 04:46:10,795 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 10598 transitions. Word has length 37 [2024-11-09 04:46:10,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:46:10,796 INFO L471 AbstractCegarLoop]: Abstraction has 3268 states and 10598 transitions. [2024-11-09 04:46:10,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:46:10,796 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 10598 transitions. [2024-11-09 04:46:10,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 04:46:10,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:46:10,803 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:46:10,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 04:46:11,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:46:11,007 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:46:11,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:46:11,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1532528095, now seen corresponding path program 8 times [2024-11-09 04:46:11,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:46:11,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839785645] [2024-11-09 04:46:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:11,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:46:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:12,838 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:12,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:46:12,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839785645] [2024-11-09 04:46:12,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839785645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:46:12,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912414555] [2024-11-09 04:46:12,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:46:12,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:46:12,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:46:12,840 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:46:12,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 04:46:12,964 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 04:46:12,965 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:46:12,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 04:46:12,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:13,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 04:46:13,437 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:46:13,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 47 [2024-11-09 04:46:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:13,449 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:14,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 230 treesize of output 202 [2024-11-09 04:46:14,811 INFO L349 Elim1Store]: treesize reduction 5, result has 98.2 percent of original size [2024-11-09 04:46:14,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 13 new quantified variables, introduced 28 case distinctions, treesize of input 1501 treesize of output 968 [2024-11-09 04:47:54,158 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-09 04:49:35,991 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-09 04:49:57,811 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-09 04:50:33,030 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-09 04:50:47,544 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 04:52:43,298 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-09 04:53:28,559 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-09 04:54:07,886 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-09 04:54:25,515 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-09 04:54:35,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2024-11-09 04:54:35,569 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-09 04:54:35,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2024-11-09 04:54:35,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [905511871] [2024-11-09 04:54:35,571 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:54:35,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:54:35,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-09 04:54:35,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795498994] [2024-11-09 04:54:35,572 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 04:54:35,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 04:54:35,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:35,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 04:54:35,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2024-11-09 04:54:35,574 INFO L87 Difference]: Start difference. First operand 3268 states and 10598 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:35,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2024-11-09 04:54:35,575 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:35,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:54:35,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 04:54:35,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 04:54:35,776 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-09 04:54:35,778 INFO L158 Benchmark]: Toolchain (without parser) took 612143.83ms. Allocated memory was 163.6MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 133.9MB in the beginning and 1.0GB in the end (delta: -868.9MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-11-09 04:54:35,779 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:54:35,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 489.35ms. Allocated memory is still 163.6MB. Free memory was 133.9MB in the beginning and 120.3MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 04:54:35,779 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.77ms. Allocated memory is still 163.6MB. Free memory was 120.3MB in the beginning and 118.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 04:54:35,779 INFO L158 Benchmark]: Boogie Preprocessor took 42.46ms. Allocated memory is still 163.6MB. Free memory was 118.2MB in the beginning and 116.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:54:35,780 INFO L158 Benchmark]: RCFGBuilder took 1027.79ms. Allocated memory is still 163.6MB. Free memory was 116.8MB in the beginning and 71.4MB in the end (delta: 45.5MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-11-09 04:54:35,780 INFO L158 Benchmark]: TraceAbstraction took 610508.50ms. Allocated memory was 163.6MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 70.7MB in the beginning and 1.0GB in the end (delta: -932.1MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-09 04:54:35,783 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 489.35ms. Allocated memory is still 163.6MB. Free memory was 133.9MB in the beginning and 120.3MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.77ms. Allocated memory is still 163.6MB. Free memory was 120.3MB in the beginning and 118.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.46ms. Allocated memory is still 163.6MB. Free memory was 118.2MB in the beginning and 116.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1027.79ms. Allocated memory is still 163.6MB. Free memory was 116.8MB in the beginning and 71.4MB in the end (delta: 45.5MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 610508.50ms. Allocated memory was 163.6MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 70.7MB in the beginning and 1.0GB in the end (delta: -932.1MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a4cca88acec68e5dbb90cd5700ef248bb5273dc097847f9475a683bfbdc7b189 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:54:38,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:54:38,521 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-09 04:54:38,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:54:38,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:54:38,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:54:38,575 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:54:38,576 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:54:38,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:54:38,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:54:38,579 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:54:38,580 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:54:38,580 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:54:38,582 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:54:38,585 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:54:38,585 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:54:38,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 04:54:38,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 04:54:38,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:54:38,587 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:54:38,591 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:54:38,592 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:54:38,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:54:38,592 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 04:54:38,593 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 04:54:38,593 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 04:54:38,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:54:38,594 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 04:54:38,594 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 04:54:38,595 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:54:38,595 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 04:54:38,595 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 04:54:38,596 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:54:38,596 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:54:38,596 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:54:38,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 04:54:38,597 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:54:38,597 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:54:38,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:54:38,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:54:38,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:54:38,600 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 04:54:38,601 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 04:54:38,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:54:38,602 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:54:38,602 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_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4cca88acec68e5dbb90cd5700ef248bb5273dc097847f9475a683bfbdc7b189 [2024-11-09 04:54:39,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:54:39,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:54:39,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:54:39,107 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:54:39,107 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:54:39,110 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/weaver/unroll-3.wvr.c Unable to find full path for "g++" [2024-11-09 04:54:41,428 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:54:41,752 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:54:41,752 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/sv-benchmarks/c/weaver/unroll-3.wvr.c [2024-11-09 04:54:41,762 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/data/03333a229/80c515839ec9492ba50068405d2f0c13/FLAGfd00c22d1 [2024-11-09 04:54:41,785 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/data/03333a229/80c515839ec9492ba50068405d2f0c13 [2024-11-09 04:54:41,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:54:41,792 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:54:41,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:54:41,797 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:54:41,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:54:41,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:54:41" (1/1) ... [2024-11-09 04:54:41,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a523bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:41, skipping insertion in model container [2024-11-09 04:54:41,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:54:41" (1/1) ... [2024-11-09 04:54:41,846 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:54:42,132 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:54:42,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:54:42,161 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:54:42,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:54:42,247 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:54:42,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:42 WrapperNode [2024-11-09 04:54:42,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:54:42,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:54:42,253 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:54:42,253 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:54:42,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:42" (1/1) ... [2024-11-09 04:54:42,301 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:42" (1/1) ... [2024-11-09 04:54:42,334 INFO L138 Inliner]: procedures = 25, calls = 25, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 134 [2024-11-09 04:54:42,339 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:54:42,340 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:54:42,340 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:54:42,340 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:54:42,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:42" (1/1) ... [2024-11-09 04:54:42,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:42" (1/1) ... [2024-11-09 04:54:42,362 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:42" (1/1) ... [2024-11-09 04:54:42,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:42" (1/1) ... [2024-11-09 04:54:42,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:42" (1/1) ... [2024-11-09 04:54:42,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:42" (1/1) ... [2024-11-09 04:54:42,389 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:42" (1/1) ... [2024-11-09 04:54:42,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:42" (1/1) ... [2024-11-09 04:54:42,402 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:54:42,403 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:54:42,403 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:54:42,403 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:54:42,407 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:42" (1/1) ... [2024-11-09 04:54:42,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:54:42,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:42,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:54:42,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:54:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:54:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 04:54:42,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 04:54:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 04:54:42,484 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 04:54:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 04:54:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 04:54:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-09 04:54:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:54:42,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:54:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-09 04:54:42,489 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 04:54:42,661 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:54:42,665 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:54:43,201 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 04:54:43,201 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:54:43,661 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:54:43,662 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 04:54:43,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:54:43 BoogieIcfgContainer [2024-11-09 04:54:43,664 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:54:43,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:54:43,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:54:43,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:54:43,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:54:41" (1/3) ... [2024-11-09 04:54:43,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588b8f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:54:43, skipping insertion in model container [2024-11-09 04:54:43,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:42" (2/3) ... [2024-11-09 04:54:43,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588b8f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:54:43, skipping insertion in model container [2024-11-09 04:54:43,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:54:43" (3/3) ... [2024-11-09 04:54:43,681 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-3.wvr.c [2024-11-09 04:54:43,704 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:54:43,705 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-09 04:54:43,705 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 04:54:43,799 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 04:54:43,842 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 46 transitions, 106 flow [2024-11-09 04:54:43,925 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 267 states, 243 states have (on average 2.8065843621399176) internal successors, (682), 266 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:43,967 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:54:43,977 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@220847a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:54:43,978 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-09 04:54:43,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 267 states, 243 states have (on average 2.8065843621399176) internal successors, (682), 266 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:43,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 04:54:43,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:43,996 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 04:54:43,997 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:54:44,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:44,005 INFO L85 PathProgramCache]: Analyzing trace with hash 14827609, now seen corresponding path program 1 times [2024-11-09 04:54:44,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:54:44,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974316489] [2024-11-09 04:54:44,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:44,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:54:44,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:54:44,025 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:54:44,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-09 04:54:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:44,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:54:44,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:44,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 04:54:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:44,266 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:54:44,267 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:54:44,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974316489] [2024-11-09 04:54:44,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974316489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:44,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:44,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 04:54:44,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047876713] [2024-11-09 04:54:44,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:44,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:54:44,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:54:44,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:54:44,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:54:44,324 INFO L87 Difference]: Start difference. First operand has 267 states, 243 states have (on average 2.8065843621399176) internal successors, (682), 266 states have internal predecessors, (682), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:44,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:44,526 INFO L93 Difference]: Finished difference Result 267 states and 682 transitions. [2024-11-09 04:54:44,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:54:44,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 04:54:44,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:44,565 INFO L225 Difference]: With dead ends: 267 [2024-11-09 04:54:44,565 INFO L226 Difference]: Without dead ends: 264 [2024-11-09 04:54:44,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:54:44,576 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:44,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 29 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:54:44,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-09 04:54:44,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-11-09 04:54:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 242 states have (on average 2.8057851239669422) internal successors, (679), 263 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:44,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 679 transitions. [2024-11-09 04:54:44,676 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 679 transitions. Word has length 4 [2024-11-09 04:54:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:44,676 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 679 transitions. [2024-11-09 04:54:44,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:44,677 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 679 transitions. [2024-11-09 04:54:44,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 04:54:44,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:44,679 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 04:54:44,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-09 04:54:44,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:54:44,882 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:54:44,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:44,883 INFO L85 PathProgramCache]: Analyzing trace with hash 14827610, now seen corresponding path program 1 times [2024-11-09 04:54:44,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:54:44,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229065118] [2024-11-09 04:54:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:44,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:54:44,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:54:44,889 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:54:44,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-09 04:54:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:44,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 04:54:44,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:45,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:54:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:45,240 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:54:45,240 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:54:45,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229065118] [2024-11-09 04:54:45,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229065118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:45,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:45,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:54:45,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154619514] [2024-11-09 04:54:45,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:45,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:54:45,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:54:45,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:54:45,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:54:45,245 INFO L87 Difference]: Start difference. First operand 264 states and 679 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:45,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:45,481 INFO L93 Difference]: Finished difference Result 527 states and 1357 transitions. [2024-11-09 04:54:45,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:54:45,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 04:54:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:45,486 INFO L225 Difference]: With dead ends: 527 [2024-11-09 04:54:45,487 INFO L226 Difference]: Without dead ends: 267 [2024-11-09 04:54:45,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:54:45,490 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:45,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 29 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:54:45,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-09 04:54:45,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2024-11-09 04:54:45,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 245 states have (on average 2.783673469387755) internal successors, (682), 266 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 682 transitions. [2024-11-09 04:54:45,515 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 682 transitions. Word has length 4 [2024-11-09 04:54:45,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:45,516 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 682 transitions. [2024-11-09 04:54:45,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 682 transitions. [2024-11-09 04:54:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 04:54:45,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:45,517 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 04:54:45,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-09 04:54:45,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:54:45,718 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:54:45,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:45,719 INFO L85 PathProgramCache]: Analyzing trace with hash -651863421, now seen corresponding path program 1 times [2024-11-09 04:54:45,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:54:45,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020994886] [2024-11-09 04:54:45,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:45,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:54:45,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:54:45,727 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:54:45,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-09 04:54:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:45,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:54:45,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:45,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:54:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:46,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:46,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:46,646 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:54:46,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020994886] [2024-11-09 04:54:46,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020994886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:46,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [711854833] [2024-11-09 04:54:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:46,647 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:54:46,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:54:46,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:54:46,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-09 04:54:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:46,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:54:46,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:46,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:54:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:47,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:47,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [711854833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:47,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821839979] [2024-11-09 04:54:47,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:47,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:47,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:47,235 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:54:47,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 04:54:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:47,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:54:47,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:47,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:54:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:47,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:47,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821839979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:47,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:54:47,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4, 4, 3, 3] total 9 [2024-11-09 04:54:47,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810898274] [2024-11-09 04:54:47,690 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:54:47,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 04:54:47,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:54:47,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 04:54:47,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:54:47,692 INFO L87 Difference]: Start difference. First operand 267 states and 682 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:49,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:49,088 INFO L93 Difference]: Finished difference Result 540 states and 1376 transitions. [2024-11-09 04:54:49,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:54:49,089 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 04:54:49,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:49,104 INFO L225 Difference]: With dead ends: 540 [2024-11-09 04:54:49,104 INFO L226 Difference]: Without dead ends: 280 [2024-11-09 04:54:49,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:54:49,107 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:49,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 71 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 04:54:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-09 04:54:49,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 276. [2024-11-09 04:54:49,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 254 states have (on average 2.7401574803149606) internal successors, (696), 275 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:49,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 696 transitions. [2024-11-09 04:54:49,129 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 696 transitions. Word has length 7 [2024-11-09 04:54:49,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:49,130 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 696 transitions. [2024-11-09 04:54:49,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:49,130 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 696 transitions. [2024-11-09 04:54:49,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 04:54:49,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:49,132 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:49,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 04:54:49,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-09 04:54:49,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-09 04:54:49,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:54:49,733 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:54:49,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:49,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1973905229, now seen corresponding path program 1 times [2024-11-09 04:54:49,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:54:49,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126880530] [2024-11-09 04:54:49,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:49,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:54:49,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:54:49,739 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:54:49,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-09 04:54:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:49,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:54:49,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:49,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 04:54:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:54:49,868 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:54:49,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:54:49,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126880530] [2024-11-09 04:54:49,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126880530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:49,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:49,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:54:49,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076008875] [2024-11-09 04:54:49,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:49,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:54:49,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:54:49,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:54:49,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:54:49,872 INFO L87 Difference]: Start difference. First operand 276 states and 696 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:50,030 INFO L93 Difference]: Finished difference Result 276 states and 696 transitions. [2024-11-09 04:54:50,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:54:50,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 04:54:50,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:50,035 INFO L225 Difference]: With dead ends: 276 [2024-11-09 04:54:50,035 INFO L226 Difference]: Without dead ends: 201 [2024-11-09 04:54:50,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:54:50,038 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:50,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 20 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:54:50,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-09 04:54:50,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-11-09 04:54:50,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 192 states have (on average 2.6197916666666665) internal successors, (503), 200 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 503 transitions. [2024-11-09 04:54:50,054 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 503 transitions. Word has length 11 [2024-11-09 04:54:50,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:50,055 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 503 transitions. [2024-11-09 04:54:50,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:50,055 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 503 transitions. [2024-11-09 04:54:50,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 04:54:50,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:50,057 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:50,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-09 04:54:50,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:54:50,260 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:54:50,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:50,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1973905228, now seen corresponding path program 1 times [2024-11-09 04:54:50,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:54:50,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112991511] [2024-11-09 04:54:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:50,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:54:50,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:54:50,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:54:50,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-09 04:54:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:50,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:54:50,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:50,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:50,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-11-09 04:54:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:50,874 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:54:50,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112991511] [2024-11-09 04:54:50,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112991511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:50,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1552339624] [2024-11-09 04:54:50,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:50,875 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:54:50,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:54:50,878 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:54:50,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-09 04:54:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:51,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 04:54:51,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:51,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:54:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:51,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:52,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1552339624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:52,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373939581] [2024-11-09 04:54:52,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:52,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:52,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:52,134 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:54:52,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 04:54:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:52,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 04:54:52,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:52,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:54:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:52,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:52,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373939581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:52,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:54:52,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 5, 5, 5, 5] total 17 [2024-11-09 04:54:52,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739635004] [2024-11-09 04:54:52,981 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:54:52,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 04:54:52,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:54:52,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 04:54:52,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:54:52,983 INFO L87 Difference]: Start difference. First operand 201 states and 503 transitions. Second operand has 19 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:53,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:53,974 INFO L93 Difference]: Finished difference Result 520 states and 1362 transitions. [2024-11-09 04:54:53,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 04:54:53,975 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 04:54:53,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:53,982 INFO L225 Difference]: With dead ends: 520 [2024-11-09 04:54:53,982 INFO L226 Difference]: Without dead ends: 496 [2024-11-09 04:54:53,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2024-11-09 04:54:53,984 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 113 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:53,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 50 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 04:54:53,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-11-09 04:54:54,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 273. [2024-11-09 04:54:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 264 states have (on average 2.7803030303030303) internal successors, (734), 272 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:54,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 734 transitions. [2024-11-09 04:54:54,009 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 734 transitions. Word has length 11 [2024-11-09 04:54:54,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:54,009 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 734 transitions. [2024-11-09 04:54:54,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:54,010 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 734 transitions. [2024-11-09 04:54:54,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 04:54:54,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:54,012 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:54,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-11-09 04:54:54,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-09 04:54:54,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 04:54:54,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:54,615 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:54:54,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:54,616 INFO L85 PathProgramCache]: Analyzing trace with hash 500608559, now seen corresponding path program 1 times [2024-11-09 04:54:54,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:54:54,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452828943] [2024-11-09 04:54:54,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:54,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:54:54,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:54:54,618 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:54:54,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-09 04:54:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:54,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:54:54,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:54,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:55,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-11-09 04:54:55,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:55,261 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:54:55,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452828943] [2024-11-09 04:54:55,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452828943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:55,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1638087343] [2024-11-09 04:54:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:55,262 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:54:55,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:54:55,265 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:54:55,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-09 04:54:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:55,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 04:54:55,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:55,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:54:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:56,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:56,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1638087343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:56,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772561696] [2024-11-09 04:54:56,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:56,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:56,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:56,524 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:54:56,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 04:54:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:56,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 04:54:56,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:56,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:54:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:57,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:57,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772561696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:57,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:54:57,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 5, 5, 5, 5] total 17 [2024-11-09 04:54:57,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618628483] [2024-11-09 04:54:57,274 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:54:57,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 04:54:57,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:54:57,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 04:54:57,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:54:57,277 INFO L87 Difference]: Start difference. First operand 273 states and 734 transitions. Second operand has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:58,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:58,183 INFO L93 Difference]: Finished difference Result 554 states and 1548 transitions. [2024-11-09 04:54:58,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 04:54:58,184 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 04:54:58,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:58,188 INFO L225 Difference]: With dead ends: 554 [2024-11-09 04:54:58,188 INFO L226 Difference]: Without dead ends: 533 [2024-11-09 04:54:58,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2024-11-09 04:54:58,190 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 72 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:58,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 66 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 04:54:58,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-09 04:54:58,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 336. [2024-11-09 04:54:58,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 327 states have (on average 2.90519877675841) internal successors, (950), 335 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 950 transitions. [2024-11-09 04:54:58,209 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 950 transitions. Word has length 13 [2024-11-09 04:54:58,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:58,210 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 950 transitions. [2024-11-09 04:54:58,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:58,210 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 950 transitions. [2024-11-09 04:54:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 04:54:58,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:58,212 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:58,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-11-09 04:54:58,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 04:54:58,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-09 04:54:58,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:54:58,813 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:54:58,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:58,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1661003351, now seen corresponding path program 1 times [2024-11-09 04:54:58,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:54:58,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285493776] [2024-11-09 04:54:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:58,814 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:54:58,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:54:58,815 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:54:58,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-09 04:54:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:58,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 04:54:58,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:58,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:54:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:59,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:55:00,707 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:00,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285493776] [2024-11-09 04:55:00,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285493776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:00,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [981714268] [2024-11-09 04:55:00,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:00,708 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:55:00,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:55:00,709 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:55:00,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-09 04:55:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:00,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 04:55:00,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:00,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:55:01,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:55:01,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:55:01,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [981714268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:01,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502766247] [2024-11-09 04:55:01,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:01,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:55:01,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:55:01,940 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:55:01,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 04:55:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:02,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 04:55:02,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:02,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:55:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:55:02,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:55:02,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502766247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:02,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:55:02,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6, 6, 6, 6] total 15 [2024-11-09 04:55:02,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544686521] [2024-11-09 04:55:02,932 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:55:02,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 04:55:02,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:02,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 04:55:02,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:55:02,933 INFO L87 Difference]: Start difference. First operand 336 states and 950 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:04,585 INFO L93 Difference]: Finished difference Result 592 states and 1765 transitions. [2024-11-09 04:55:04,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 04:55:04,587 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 04:55:04,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:04,592 INFO L225 Difference]: With dead ends: 592 [2024-11-09 04:55:04,592 INFO L226 Difference]: Without dead ends: 529 [2024-11-09 04:55:04,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-11-09 04:55:04,594 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 97 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:04,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 73 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 04:55:04,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-09 04:55:04,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 210. [2024-11-09 04:55:04,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 207 states have (on average 2.7053140096618358) internal successors, (560), 209 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) [2024-11-09 04:55:04,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 560 transitions. [2024-11-09 04:55:04,624 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 560 transitions. Word has length 14 [2024-11-09 04:55:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:04,625 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 560 transitions. [2024-11-09 04:55:04,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:04,625 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 560 transitions. [2024-11-09 04:55:04,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 04:55:04,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:04,630 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:04,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-09 04:55:04,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-11-09 04:55:05,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 04:55:05,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:55:05,231 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:55:05,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:05,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2082052181, now seen corresponding path program 1 times [2024-11-09 04:55:05,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:05,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534632964] [2024-11-09 04:55:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:05,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:05,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:05,233 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:55:05,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-09 04:55:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:05,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 04:55:05,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:05,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:55:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:55:05,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:55:07,135 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:07,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534632964] [2024-11-09 04:55:07,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534632964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:07,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [553055004] [2024-11-09 04:55:07,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:07,136 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:55:07,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:55:07,139 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:55:07,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-09 04:55:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:07,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 04:55:07,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:07,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:55:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:55:07,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:55:08,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [553055004] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:08,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125843990] [2024-11-09 04:55:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:08,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:55:08,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:55:08,256 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:55:08,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 04:55:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:08,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 04:55:08,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:08,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:55:08,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:55:08,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:55:09,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125843990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:09,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:55:09,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6, 6, 6, 6] total 15 [2024-11-09 04:55:09,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257547189] [2024-11-09 04:55:09,185 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:55:09,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 04:55:09,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:09,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 04:55:09,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:55:09,188 INFO L87 Difference]: Start difference. First operand 210 states and 560 transitions. Second operand has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:11,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:11,113 INFO L93 Difference]: Finished difference Result 385 states and 1068 transitions. [2024-11-09 04:55:11,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 04:55:11,114 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 04:55:11,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:11,117 INFO L225 Difference]: With dead ends: 385 [2024-11-09 04:55:11,117 INFO L226 Difference]: Without dead ends: 367 [2024-11-09 04:55:11,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-11-09 04:55:11,118 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 92 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:11,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 66 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 04:55:11,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-09 04:55:11,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 138. [2024-11-09 04:55:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 136 states have (on average 2.5) internal successors, (340), 137 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:11,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 340 transitions. [2024-11-09 04:55:11,130 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 340 transitions. Word has length 14 [2024-11-09 04:55:11,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:11,130 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 340 transitions. [2024-11-09 04:55:11,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:11,131 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 340 transitions. [2024-11-09 04:55:11,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 04:55:11,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:11,132 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 04:55:11,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 04:55:11,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2024-11-09 04:55:11,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:11,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:11,734 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:55:11,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:11,734 INFO L85 PathProgramCache]: Analyzing trace with hash 254476058, now seen corresponding path program 2 times [2024-11-09 04:55:11,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:11,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868760896] [2024-11-09 04:55:11,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:55:11,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:11,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:11,736 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:55:11,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-11-09 04:55:11,806 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:55:11,806 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:11,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 04:55:11,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:11,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:55:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:55:12,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:55:13,140 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:13,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868760896] [2024-11-09 04:55:13,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868760896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:13,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [543317686] [2024-11-09 04:55:13,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:55:13,141 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:55:13,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:55:13,144 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:55:13,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-09 04:55:13,268 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:55:13,268 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:13,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 04:55:13,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:13,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:55:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:55:13,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:55:13,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [543317686] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:13,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294620330] [2024-11-09 04:55:13,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:55:13,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:55:13,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:55:13,968 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:55:13,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 04:55:14,050 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:55:14,050 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:14,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:55:14,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:14,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 04:55:14,459 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:55:14,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:55:14,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294620330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:14,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:55:14,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 16 [2024-11-09 04:55:14,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402302840] [2024-11-09 04:55:14,861 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:55:14,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 04:55:14,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:14,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 04:55:14,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-09 04:55:14,862 INFO L87 Difference]: Start difference. First operand 138 states and 340 transitions. Second operand has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:18,403 INFO L93 Difference]: Finished difference Result 291 states and 705 transitions. [2024-11-09 04:55:18,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 04:55:18,404 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 04:55:18,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:18,406 INFO L225 Difference]: With dead ends: 291 [2024-11-09 04:55:18,406 INFO L226 Difference]: Without dead ends: 169 [2024-11-09 04:55:18,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=268, Invalid=602, Unknown=0, NotChecked=0, Total=870 [2024-11-09 04:55:18,407 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 49 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:18,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 57 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 04:55:18,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-09 04:55:18,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 156. [2024-11-09 04:55:18,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 154 states have (on average 2.383116883116883) internal successors, (367), 155 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:18,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 367 transitions. [2024-11-09 04:55:18,415 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 367 transitions. Word has length 16 [2024-11-09 04:55:18,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:18,415 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 367 transitions. [2024-11-09 04:55:18,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:18,416 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 367 transitions. [2024-11-09 04:55:18,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 04:55:18,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:18,417 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:18,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:18,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:18,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:19,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:55:19,018 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:55:19,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:19,019 INFO L85 PathProgramCache]: Analyzing trace with hash 245147330, now seen corresponding path program 1 times [2024-11-09 04:55:19,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:19,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937245768] [2024-11-09 04:55:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:19,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:19,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:19,023 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:55:19,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2024-11-09 04:55:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:19,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:55:19,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:19,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:19,240 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:55:19,240 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:19,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937245768] [2024-11-09 04:55:19,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937245768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:55:19,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:55:19,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:55:19,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903003332] [2024-11-09 04:55:19,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:55:19,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:55:19,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:19,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:55:19,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:55:19,242 INFO L87 Difference]: Start difference. First operand 156 states and 367 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:19,344 INFO L93 Difference]: Finished difference Result 245 states and 604 transitions. [2024-11-09 04:55:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:55:19,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 04:55:19,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:19,348 INFO L225 Difference]: With dead ends: 245 [2024-11-09 04:55:19,348 INFO L226 Difference]: Without dead ends: 232 [2024-11-09 04:55:19,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:55:19,349 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:19,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 18 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:55:19,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-09 04:55:19,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 207. [2024-11-09 04:55:19,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 205 states have (on average 2.453658536585366) internal successors, (503), 206 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 503 transitions. [2024-11-09 04:55:19,364 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 503 transitions. Word has length 20 [2024-11-09 04:55:19,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:19,365 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 503 transitions. [2024-11-09 04:55:19,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:19,365 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 503 transitions. [2024-11-09 04:55:19,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 04:55:19,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:19,368 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:19,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:19,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:19,568 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:55:19,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:19,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1351223333, now seen corresponding path program 1 times [2024-11-09 04:55:19,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:19,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047231597] [2024-11-09 04:55:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:19,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:19,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:19,572 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:55:19,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-11-09 04:55:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:19,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:55:19,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:19,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:19,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:19,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047231597] [2024-11-09 04:55:19,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047231597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:19,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2041571844] [2024-11-09 04:55:19,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:19,870 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:55:19,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:55:19,871 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:55:19,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-09 04:55:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:19,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:55:19,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:20,050 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:55:20,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2041571844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:55:20,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:55:20,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 12 [2024-11-09 04:55:20,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912798995] [2024-11-09 04:55:20,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:55:20,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:55:20,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:20,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:55:20,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:55:20,052 INFO L87 Difference]: Start difference. First operand 207 states and 503 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:20,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:20,249 INFO L93 Difference]: Finished difference Result 305 states and 750 transitions. [2024-11-09 04:55:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:55:20,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-09 04:55:20,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:20,252 INFO L225 Difference]: With dead ends: 305 [2024-11-09 04:55:20,252 INFO L226 Difference]: Without dead ends: 276 [2024-11-09 04:55:20,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:55:20,253 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:20,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 18 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:55:20,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-09 04:55:20,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 206. [2024-11-09 04:55:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 204 states have (on average 2.5098039215686274) internal successors, (512), 205 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 512 transitions. [2024-11-09 04:55:20,263 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 512 transitions. Word has length 23 [2024-11-09 04:55:20,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:20,264 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 512 transitions. [2024-11-09 04:55:20,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:20,264 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 512 transitions. [2024-11-09 04:55:20,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 04:55:20,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:20,266 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:20,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2024-11-09 04:55:20,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:20,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:55:20,667 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:55:20,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:20,667 INFO L85 PathProgramCache]: Analyzing trace with hash -395205239, now seen corresponding path program 2 times [2024-11-09 04:55:20,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:20,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932380831] [2024-11-09 04:55:20,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:55:20,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:20,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:20,669 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:55:20,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2024-11-09 04:55:20,748 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:55:20,748 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:20,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:55:20,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:20,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:55:20,790 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:20,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932380831] [2024-11-09 04:55:20,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932380831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:55:20,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:55:20,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:55:20,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919996986] [2024-11-09 04:55:20,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:55:20,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:55:20,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:20,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:55:20,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:55:20,793 INFO L87 Difference]: Start difference. First operand 206 states and 512 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:20,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:20,984 INFO L93 Difference]: Finished difference Result 295 states and 734 transitions. [2024-11-09 04:55:20,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:55:20,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-09 04:55:20,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:20,990 INFO L225 Difference]: With dead ends: 295 [2024-11-09 04:55:20,990 INFO L226 Difference]: Without dead ends: 254 [2024-11-09 04:55:20,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:55:20,991 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 52 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:20,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 11 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:55:20,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-09 04:55:20,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 218. [2024-11-09 04:55:21,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 216 states have (on average 2.5462962962962963) internal successors, (550), 217 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:21,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 550 transitions. [2024-11-09 04:55:21,002 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 550 transitions. Word has length 23 [2024-11-09 04:55:21,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:21,003 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 550 transitions. [2024-11-09 04:55:21,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:21,003 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 550 transitions. [2024-11-09 04:55:21,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 04:55:21,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:21,004 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:21,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:21,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:21,205 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:55:21,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:21,206 INFO L85 PathProgramCache]: Analyzing trace with hash 211134921, now seen corresponding path program 3 times [2024-11-09 04:55:21,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:21,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716608352] [2024-11-09 04:55:21,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:55:21,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:21,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:21,210 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:55:21,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-11-09 04:55:21,307 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 04:55:21,307 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:21,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:55:21,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:21,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:21,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:21,646 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:21,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716608352] [2024-11-09 04:55:21,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716608352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:21,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [925431875] [2024-11-09 04:55:21,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:55:21,646 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:55:21,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:55:21,647 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:55:21,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-09 04:55:21,807 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 04:55:21,808 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:21,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:55:21,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:21,860 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:55:21,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [925431875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:55:21,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:55:21,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 12 [2024-11-09 04:55:21,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359217726] [2024-11-09 04:55:21,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:55:21,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:55:21,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:21,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:55:21,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:55:21,862 INFO L87 Difference]: Start difference. First operand 218 states and 550 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:21,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:21,997 INFO L93 Difference]: Finished difference Result 265 states and 661 transitions. [2024-11-09 04:55:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:55:21,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-09 04:55:21,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:22,000 INFO L225 Difference]: With dead ends: 265 [2024-11-09 04:55:22,000 INFO L226 Difference]: Without dead ends: 240 [2024-11-09 04:55:22,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:55:22,001 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:22,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 21 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:55:22,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-09 04:55:22,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 182. [2024-11-09 04:55:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 180 states have (on average 2.4166666666666665) internal successors, (435), 181 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 435 transitions. [2024-11-09 04:55:22,015 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 435 transitions. Word has length 23 [2024-11-09 04:55:22,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:22,015 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 435 transitions. [2024-11-09 04:55:22,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:22,016 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 435 transitions. [2024-11-09 04:55:22,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 04:55:22,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:22,017 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:22,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-11-09 04:55:22,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:22,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:22,418 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:55:22,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:22,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1668310427, now seen corresponding path program 1 times [2024-11-09 04:55:22,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:22,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037992194] [2024-11-09 04:55:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:22,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:22,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:22,421 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:55:22,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2024-11-09 04:55:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:22,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:55:22,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:22,593 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:55:22,593 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:22,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037992194] [2024-11-09 04:55:22,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037992194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:55:22,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:55:22,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:55:22,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373395328] [2024-11-09 04:55:22,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:55:22,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:55:22,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:22,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:55:22,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:55:22,595 INFO L87 Difference]: Start difference. First operand 182 states and 435 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:22,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:22,926 INFO L93 Difference]: Finished difference Result 348 states and 849 transitions. [2024-11-09 04:55:22,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:55:22,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-09 04:55:22,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:22,930 INFO L225 Difference]: With dead ends: 348 [2024-11-09 04:55:22,930 INFO L226 Difference]: Without dead ends: 286 [2024-11-09 04:55:22,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:55:22,932 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 53 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:22,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 19 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:55:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-09 04:55:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 243. [2024-11-09 04:55:22,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 241 states have (on average 2.4937759336099585) internal successors, (601), 242 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:22,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 601 transitions. [2024-11-09 04:55:22,956 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 601 transitions. Word has length 25 [2024-11-09 04:55:22,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:22,957 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 601 transitions. [2024-11-09 04:55:22,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:22,958 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 601 transitions. [2024-11-09 04:55:22,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 04:55:22,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:22,962 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:22,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:23,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:23,163 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:55:23,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:23,163 INFO L85 PathProgramCache]: Analyzing trace with hash 32429327, now seen corresponding path program 2 times [2024-11-09 04:55:23,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:23,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625654070] [2024-11-09 04:55:23,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:55:23,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:23,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:23,165 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:55:23,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2024-11-09 04:55:23,258 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:55:23,258 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:23,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:55:23,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:23,390 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:55:23,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:23,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625654070] [2024-11-09 04:55:23,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625654070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:55:23,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:55:23,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 04:55:23,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924068347] [2024-11-09 04:55:23,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:55:23,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 04:55:23,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:23,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 04:55:23,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:55:23,392 INFO L87 Difference]: Start difference. First operand 243 states and 601 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:23,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:23,721 INFO L93 Difference]: Finished difference Result 347 states and 835 transitions. [2024-11-09 04:55:23,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 04:55:23,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-09 04:55:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:23,724 INFO L225 Difference]: With dead ends: 347 [2024-11-09 04:55:23,724 INFO L226 Difference]: Without dead ends: 314 [2024-11-09 04:55:23,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:55:23,726 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 53 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:23,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 12 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:55:23,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-09 04:55:23,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 259. [2024-11-09 04:55:23,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 257 states have (on average 2.4941634241245136) internal successors, (641), 258 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:23,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 641 transitions. [2024-11-09 04:55:23,737 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 641 transitions. Word has length 25 [2024-11-09 04:55:23,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:23,738 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 641 transitions. [2024-11-09 04:55:23,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:23,738 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 641 transitions. [2024-11-09 04:55:23,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 04:55:23,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:23,739 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:23,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:23,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:23,940 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:55:23,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:23,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2098058395, now seen corresponding path program 3 times [2024-11-09 04:55:23,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:23,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088318792] [2024-11-09 04:55:23,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:55:23,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:23,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:23,945 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:55:23,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2024-11-09 04:55:24,041 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 04:55:24,041 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:24,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:55:24,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:24,200 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:55:24,200 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:24,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088318792] [2024-11-09 04:55:24,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088318792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:55:24,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:55:24,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 04:55:24,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857051115] [2024-11-09 04:55:24,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:55:24,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 04:55:24,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:24,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 04:55:24,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-09 04:55:24,202 INFO L87 Difference]: Start difference. First operand 259 states and 641 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:24,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:24,570 INFO L93 Difference]: Finished difference Result 343 states and 826 transitions. [2024-11-09 04:55:24,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:55:24,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-09 04:55:24,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:24,572 INFO L225 Difference]: With dead ends: 343 [2024-11-09 04:55:24,572 INFO L226 Difference]: Without dead ends: 320 [2024-11-09 04:55:24,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-09 04:55:24,573 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 54 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:24,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 18 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:55:24,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-09 04:55:24,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 263. [2024-11-09 04:55:24,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 261 states have (on average 2.4942528735632186) internal successors, (651), 262 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:24,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 651 transitions. [2024-11-09 04:55:24,584 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 651 transitions. Word has length 25 [2024-11-09 04:55:24,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:24,585 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 651 transitions. [2024-11-09 04:55:24,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:24,585 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 651 transitions. [2024-11-09 04:55:24,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 04:55:24,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:24,587 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:24,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:24,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:24,787 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:55:24,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:24,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1647449991, now seen corresponding path program 4 times [2024-11-09 04:55:24,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:24,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44371124] [2024-11-09 04:55:24,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:55:24,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:24,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:24,790 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:55:24,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2024-11-09 04:55:24,867 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:55:24,868 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:24,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:55:24,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:25,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:25,641 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:25,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44371124] [2024-11-09 04:55:25,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44371124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:25,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2146479492] [2024-11-09 04:55:25,641 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:55:25,641 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:55:25,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:55:25,643 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:55:25,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-09 04:55:25,746 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:55:25,746 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:25,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:55:25,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:25,804 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:55:25,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2146479492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:55:25,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:55:25,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 9] total 16 [2024-11-09 04:55:25,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142970994] [2024-11-09 04:55:25,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:55:25,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:55:25,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:25,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:55:25,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:55:25,806 INFO L87 Difference]: Start difference. First operand 263 states and 651 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:25,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:25,960 INFO L93 Difference]: Finished difference Result 360 states and 873 transitions. [2024-11-09 04:55:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:55:25,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-09 04:55:25,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:25,963 INFO L225 Difference]: With dead ends: 360 [2024-11-09 04:55:25,963 INFO L226 Difference]: Without dead ends: 322 [2024-11-09 04:55:25,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:55:25,964 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:25,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 20 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:55:25,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-09 04:55:25,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 265. [2024-11-09 04:55:25,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 263 states have (on average 2.463878326996198) internal successors, (648), 264 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:25,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 648 transitions. [2024-11-09 04:55:25,975 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 648 transitions. Word has length 25 [2024-11-09 04:55:25,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:25,976 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 648 transitions. [2024-11-09 04:55:25,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:25,976 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 648 transitions. [2024-11-09 04:55:25,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 04:55:25,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:25,977 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:25,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:26,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:26,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:26,378 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:55:26,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:26,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1387542639, now seen corresponding path program 5 times [2024-11-09 04:55:26,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:26,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789221323] [2024-11-09 04:55:26,379 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 04:55:26,379 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:26,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:26,381 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:55:26,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2024-11-09 04:55:26,484 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 04:55:26,484 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:26,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:55:26,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:26,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:55:26,516 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:26,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789221323] [2024-11-09 04:55:26,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789221323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:55:26,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:55:26,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:55:26,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230241985] [2024-11-09 04:55:26,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:55:26,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:55:26,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:26,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:55:26,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:55:26,518 INFO L87 Difference]: Start difference. First operand 265 states and 648 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:26,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:26,670 INFO L93 Difference]: Finished difference Result 326 states and 792 transitions. [2024-11-09 04:55:26,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:55:26,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-09 04:55:26,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:26,674 INFO L225 Difference]: With dead ends: 326 [2024-11-09 04:55:26,674 INFO L226 Difference]: Without dead ends: 288 [2024-11-09 04:55:26,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:55:26,675 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 29 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:26,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 16 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:55:26,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-09 04:55:26,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 226. [2024-11-09 04:55:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 224 states have (on average 2.4419642857142856) internal successors, (547), 225 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:26,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 547 transitions. [2024-11-09 04:55:26,684 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 547 transitions. Word has length 25 [2024-11-09 04:55:26,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:26,684 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 547 transitions. [2024-11-09 04:55:26,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:26,684 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 547 transitions. [2024-11-09 04:55:26,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 04:55:26,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:26,685 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:26,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:26,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:26,886 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:55:26,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:26,887 INFO L85 PathProgramCache]: Analyzing trace with hash -24506132, now seen corresponding path program 1 times [2024-11-09 04:55:26,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:26,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051235917] [2024-11-09 04:55:26,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:26,888 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:26,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:26,891 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:55:26,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2024-11-09 04:55:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:27,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:55:27,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:55:27,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:55:27,263 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:27,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051235917] [2024-11-09 04:55:27,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051235917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:27,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [142820099] [2024-11-09 04:55:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:27,264 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:55:27,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:55:27,265 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:55:27,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-09 04:55:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:27,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:55:27,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:55:27,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:55:27,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [142820099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:27,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445917563] [2024-11-09 04:55:27,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:27,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:55:27,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:55:27,547 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:55:27,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-09 04:55:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:27,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:55:27,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:27,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:55:27,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:55:27,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445917563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:27,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:55:27,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2024-11-09 04:55:27,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401152507] [2024-11-09 04:55:27,780 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:55:27,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 04:55:27,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:27,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 04:55:27,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-09 04:55:27,783 INFO L87 Difference]: Start difference. First operand 226 states and 547 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:28,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:28,527 INFO L93 Difference]: Finished difference Result 409 states and 1049 transitions. [2024-11-09 04:55:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:55:28,528 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-09 04:55:28,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:28,531 INFO L225 Difference]: With dead ends: 409 [2024-11-09 04:55:28,531 INFO L226 Difference]: Without dead ends: 352 [2024-11-09 04:55:28,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:55:28,532 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 99 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:28,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 33 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 04:55:28,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-09 04:55:28,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 336. [2024-11-09 04:55:28,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 334 states have (on average 2.410179640718563) internal successors, (805), 335 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 805 transitions. [2024-11-09 04:55:28,545 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 805 transitions. Word has length 28 [2024-11-09 04:55:28,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:28,545 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 805 transitions. [2024-11-09 04:55:28,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:55:28,546 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 805 transitions. [2024-11-09 04:55:28,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 04:55:28,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:28,547 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:28,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:28,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:28,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:29,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:55:29,148 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 04:55:29,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:29,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1533308492, now seen corresponding path program 2 times [2024-11-09 04:55:29,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:29,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803657694] [2024-11-09 04:55:29,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:55:29,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:29,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:29,151 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:55:29,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2024-11-09 04:55:29,267 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:55:29,267 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:29,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 04:55:29,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:29,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:29,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 45 [2024-11-09 04:55:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:29,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:33,524 INFO L349 Elim1Store]: treesize reduction 15, result has 90.4 percent of original size [2024-11-09 04:55:33,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 177 [2024-11-09 04:55:35,348 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:55:35,348 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:35,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803657694] [2024-11-09 04:55:35,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803657694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:35,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1163429042] [2024-11-09 04:55:35,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:55:35,349 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:55:35,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:55:35,355 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:55:35,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-11-09 04:55:35,621 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:55:35,621 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:35,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 04:55:35,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:35,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 04:55:36,565 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:36,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:36,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2024-11-09 04:55:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 04:55:36,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:41,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-09 04:55:41,177 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2024-11-09 04:55:41,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 69 [2024-11-09 04:55:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 04:55:41,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1163429042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:41,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661768001] [2024-11-09 04:55:41,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:55:41,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:55:41,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:55:41,485 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:55:41,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b072b6f-1040-4d6e-9730-a5ca1d3030f7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-09 04:55:41,587 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:55:41,587 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:41,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 04:55:41,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:41,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 04:55:44,280 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:44,284 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:44,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2024-11-09 04:55:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 04:55:44,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:45,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-09 04:55:45,105 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2024-11-09 04:55:45,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 69 [2024-11-09 04:55:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 04:55:45,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661768001] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:45,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:55:45,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 9, 9, 9] total 31 [2024-11-09 04:55:45,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868060095] [2024-11-09 04:55:45,209 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:55:45,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 04:55:45,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 04:55:45,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2024-11-09 04:55:45,211 INFO L87 Difference]: Start difference. First operand 336 states and 805 transitions. Second operand has 32 states, 32 states have (on average 3.90625) internal successors, (125), 31 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) [2024-11-09 04:55:53,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:55:56,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:55:58,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:56:00,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:02,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:06,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:08,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:10,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:12,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:14,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:16,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:18,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:25,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:27,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:29,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:31,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:33,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:35,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:37,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:40,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:42,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:44,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:46,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:48,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:50,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:52,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:54,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:56,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:03,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:05,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:09,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:11,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:13,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:16,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:18,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:21,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:23,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:25,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:37,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:40,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:43,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:45,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:48,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:50,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:52,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:54,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:56,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:57:59,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:58:02,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:58:04,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:58:06,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:58:08,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:58:10,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:58:13,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:58:15,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:58:17,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:58:19,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:58:21,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:58:23,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:58:25,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:58:27,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:58:29,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:58:31,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1]