./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:43:17,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:43:17,340 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:43:17,346 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:43:17,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:43:17,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:43:17,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:43:17,373 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:43:17,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:43:17,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:43:17,375 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:43:17,376 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:43:17,377 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:43:17,377 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:43:17,378 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:43:17,379 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:43:17,379 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:43:17,380 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:43:17,380 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:43:17,381 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:43:17,382 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:43:17,383 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:43:17,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:43:17,384 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:43:17,385 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:43:17,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:43:17,386 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:43:17,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:43:17,387 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:43:17,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:43:17,388 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:43:17,389 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:43:17,389 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:43:17,390 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:43:17,390 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:43:17,390 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:43:17,391 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:43:17,391 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:43:17,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:43:17,392 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:43:17,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:43:17,393 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:43:17,393 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:43:17,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:43:17,393 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:43:17,394 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:43:17,394 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:43:17,394 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_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 [2023-11-12 00:43:17,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:43:17,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:43:17,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:43:17,713 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:43:17,714 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:43:17,715 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2023-11-12 00:43:20,912 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:43:21,187 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:43:21,188 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2023-11-12 00:43:21,199 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/data/e73ee1617/a356029aa6984886b1ba821d6fea6967/FLAGe1127d92e [2023-11-12 00:43:21,216 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/data/e73ee1617/a356029aa6984886b1ba821d6fea6967 [2023-11-12 00:43:21,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:43:21,227 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:43:21,230 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:43:21,231 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:43:21,236 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:43:21,239 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:43:21" (1/1) ... [2023-11-12 00:43:21,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b2dc8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:21, skipping insertion in model container [2023-11-12 00:43:21,240 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:43:21" (1/1) ... [2023-11-12 00:43:21,284 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:43:21,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:43:21,506 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:43:21,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:43:21,553 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:21,553 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:21,560 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:43:21,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:21 WrapperNode [2023-11-12 00:43:21,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:43:21,562 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:43:21,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:43:21,562 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:43:21,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:21" (1/1) ... [2023-11-12 00:43:21,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:21" (1/1) ... [2023-11-12 00:43:21,631 INFO L138 Inliner]: procedures = 27, calls = 69, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 385 [2023-11-12 00:43:21,632 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:43:21,633 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:43:21,633 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:43:21,633 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:43:21,643 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:21" (1/1) ... [2023-11-12 00:43:21,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:21" (1/1) ... [2023-11-12 00:43:21,649 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:21" (1/1) ... [2023-11-12 00:43:21,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:21" (1/1) ... [2023-11-12 00:43:21,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:21" (1/1) ... [2023-11-12 00:43:21,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:21" (1/1) ... [2023-11-12 00:43:21,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:21" (1/1) ... [2023-11-12 00:43:21,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:21" (1/1) ... [2023-11-12 00:43:21,692 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:43:21,693 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:43:21,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:43:21,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:43:21,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:21" (1/1) ... [2023-11-12 00:43:21,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:43:21,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:21,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:43:21,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:43:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:43:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:43:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:43:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:43:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 00:43:21,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 00:43:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 00:43:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 00:43:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 00:43:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 00:43:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-12 00:43:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-12 00:43:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:43:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 00:43:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 00:43:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:43:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:43:21,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:43:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:43:21,787 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:43:21,915 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:43:21,917 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:43:22,712 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:43:23,398 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:43:23,398 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-12 00:43:23,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:23 BoogieIcfgContainer [2023-11-12 00:43:23,402 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:43:23,407 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:43:23,407 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:43:23,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:43:23,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:43:21" (1/3) ... [2023-11-12 00:43:23,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64289dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:43:23, skipping insertion in model container [2023-11-12 00:43:23,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:21" (2/3) ... [2023-11-12 00:43:23,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64289dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:43:23, skipping insertion in model container [2023-11-12 00:43:23,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:23" (3/3) ... [2023-11-12 00:43:23,415 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2023-11-12 00:43:23,425 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:43:23,437 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:43:23,437 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-12 00:43:23,437 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:43:23,703 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 00:43:23,752 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:43:23,779 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 263 transitions, 554 flow [2023-11-12 00:43:23,781 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 263 transitions, 554 flow [2023-11-12 00:43:23,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 263 transitions, 554 flow [2023-11-12 00:43:23,961 INFO L124 PetriNetUnfolderBase]: 15/259 cut-off events. [2023-11-12 00:43:23,962 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 00:43:23,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 259 events. 15/259 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 285 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 207. Up to 2 conditions per place. [2023-11-12 00:43:23,980 INFO L119 LiptonReduction]: Number of co-enabled transitions 6840 [2023-11-12 00:43:43,839 INFO L134 LiptonReduction]: Checked pairs total: 21526 [2023-11-12 00:43:43,839 INFO L136 LiptonReduction]: Total number of compositions: 275 [2023-11-12 00:43:43,849 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 75 transitions, 178 flow [2023-11-12 00:43:46,461 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 49007 states, 42443 states have (on average 5.090992625403483) internal successors, (216077), 49006 states have internal predecessors, (216077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:46,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:43:46,500 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@846c4d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:43:46,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2023-11-12 00:43:46,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 49007 states, 42443 states have (on average 5.090992625403483) internal successors, (216077), 49006 states have internal predecessors, (216077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:46,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-12 00:43:46,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:46,598 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-12 00:43:46,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-12 00:43:46,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:46,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1623, now seen corresponding path program 1 times [2023-11-12 00:43:46,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:46,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140425059] [2023-11-12 00:43:46,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:46,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:46,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:46,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140425059] [2023-11-12 00:43:46,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140425059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:46,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:46,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 00:43:46,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628136705] [2023-11-12 00:43:46,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:46,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:43:46,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:46,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:43:46,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:43:46,994 INFO L87 Difference]: Start difference. First operand has 49007 states, 42443 states have (on average 5.090992625403483) internal successors, (216077), 49006 states have internal predecessors, (216077), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:48,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:48,165 INFO L93 Difference]: Finished difference Result 24437 states and 107259 transitions. [2023-11-12 00:43:48,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:43:48,168 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2023-11-12 00:43:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:49,028 INFO L225 Difference]: With dead ends: 24437 [2023-11-12 00:43:49,028 INFO L226 Difference]: Without dead ends: 24437 [2023-11-12 00:43:49,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:43:49,033 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:49,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:43:49,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24437 states. [2023-11-12 00:43:50,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24437 to 24437. [2023-11-12 00:43:50,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24437 states, 22035 states have (on average 4.867665078284547) internal successors, (107259), 24436 states have internal predecessors, (107259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:51,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24437 states to 24437 states and 107259 transitions. [2023-11-12 00:43:51,081 INFO L78 Accepts]: Start accepts. Automaton has 24437 states and 107259 transitions. Word has length 1 [2023-11-12 00:43:51,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:51,082 INFO L495 AbstractCegarLoop]: Abstraction has 24437 states and 107259 transitions. [2023-11-12 00:43:51,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:51,082 INFO L276 IsEmpty]: Start isEmpty. Operand 24437 states and 107259 transitions. [2023-11-12 00:43:51,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-12 00:43:51,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:51,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-12 00:43:51,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:43:51,084 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-12 00:43:51,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:51,084 INFO L85 PathProgramCache]: Analyzing trace with hash 51937, now seen corresponding path program 1 times [2023-11-12 00:43:51,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:51,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9581732] [2023-11-12 00:43:51,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:51,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:51,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:51,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9581732] [2023-11-12 00:43:51,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9581732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:51,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:51,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:43:51,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262168205] [2023-11-12 00:43:51,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:51,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:43:51,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:51,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:43:51,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:51,409 INFO L87 Difference]: Start difference. First operand 24437 states and 107259 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:52,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:52,122 INFO L93 Difference]: Finished difference Result 24438 states and 107261 transitions. [2023-11-12 00:43:52,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:43:52,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-12 00:43:52,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:52,482 INFO L225 Difference]: With dead ends: 24438 [2023-11-12 00:43:52,483 INFO L226 Difference]: Without dead ends: 24438 [2023-11-12 00:43:52,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:52,485 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:52,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:43:52,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24438 states. [2023-11-12 00:43:53,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24438 to 24438. [2023-11-12 00:43:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24438 states, 22036 states have (on average 4.867534942820838) internal successors, (107261), 24437 states have internal predecessors, (107261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:53,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24438 states to 24438 states and 107261 transitions. [2023-11-12 00:43:53,767 INFO L78 Accepts]: Start accepts. Automaton has 24438 states and 107261 transitions. Word has length 2 [2023-11-12 00:43:53,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:53,768 INFO L495 AbstractCegarLoop]: Abstraction has 24438 states and 107261 transitions. [2023-11-12 00:43:53,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:53,768 INFO L276 IsEmpty]: Start isEmpty. Operand 24438 states and 107261 transitions. [2023-11-12 00:43:53,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:43:53,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:53,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:43:53,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:43:53,769 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-12 00:43:53,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:53,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1611578, now seen corresponding path program 1 times [2023-11-12 00:43:53,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:53,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258253164] [2023-11-12 00:43:53,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:53,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:53,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:53,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:53,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258253164] [2023-11-12 00:43:53,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258253164] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:43:53,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372131442] [2023-11-12 00:43:53,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:53,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:53,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:53,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:43:53,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:43:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:54,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:43:54,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:54,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:43:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:54,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372131442] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:43:54,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1285184034] [2023-11-12 00:43:54,196 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:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) 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:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) 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) [2023-11-12 00:43:54,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:43:54,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-12 00:43:54,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494266874] [2023-11-12 00:43:54,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:43:54,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:43:54,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:54,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:43:54,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:43:54,200 INFO L87 Difference]: Start difference. First operand 24438 states and 107261 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:54,815 INFO L93 Difference]: Finished difference Result 24441 states and 107270 transitions. [2023-11-12 00:43:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:43:54,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 00:43:54,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:55,261 INFO L225 Difference]: With dead ends: 24441 [2023-11-12 00:43:55,276 INFO L226 Difference]: Without dead ends: 24441 [2023-11-12 00:43:55,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:43:55,278 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:55,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:43:55,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24441 states. [2023-11-12 00:43:56,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24441 to 24441. [2023-11-12 00:43:56,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24441 states, 22039 states have (on average 4.867280729615682) internal successors, (107270), 24440 states have internal predecessors, (107270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:56,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24441 states to 24441 states and 107270 transitions. [2023-11-12 00:43:56,706 INFO L78 Accepts]: Start accepts. Automaton has 24441 states and 107270 transitions. Word has length 3 [2023-11-12 00:43:56,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:56,707 INFO L495 AbstractCegarLoop]: Abstraction has 24441 states and 107270 transitions. [2023-11-12 00:43:56,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:56,707 INFO L276 IsEmpty]: Start isEmpty. Operand 24441 states and 107270 transitions. [2023-11-12 00:43:56,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:43:56,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:56,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:43:56,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:56,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f1c99-fe64-48af-9cdf-35f56e884d54/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:56,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-12 00:43:56,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:56,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1611566, now seen corresponding path program 1 times [2023-11-12 00:43:56,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:56,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485088777] [2023-11-12 00:43:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:56,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:57,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:57,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485088777] [2023-11-12 00:43:57,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485088777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:57,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:57,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:43:57,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115653833] [2023-11-12 00:43:57,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:57,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:43:57,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:57,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:43:57,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:57,011 INFO L87 Difference]: Start difference. First operand 24441 states and 107270 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:57,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:57,336 INFO L93 Difference]: Finished difference Result 24440 states and 107266 transitions. [2023-11-12 00:43:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:43:57,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 00:43:57,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:57,490 INFO L225 Difference]: With dead ends: 24440 [2023-11-12 00:43:57,490 INFO L226 Difference]: Without dead ends: 24440 [2023-11-12 00:43:57,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:57,492 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:57,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:43:57,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24440 states. [2023-11-12 00:43:58,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24440 to 24440. [2023-11-12 00:43:58,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24440 states, 22039 states have (on average 4.867099233177549) internal successors, (107266), 24439 states have internal predecessors, (107266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:59,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24440 states to 24440 states and 107266 transitions. [2023-11-12 00:43:59,015 INFO L78 Accepts]: Start accepts. Automaton has 24440 states and 107266 transitions. Word has length 3 [2023-11-12 00:43:59,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:59,015 INFO L495 AbstractCegarLoop]: Abstraction has 24440 states and 107266 transitions. [2023-11-12 00:43:59,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:59,015 INFO L276 IsEmpty]: Start isEmpty. Operand 24440 states and 107266 transitions. [2023-11-12 00:43:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:43:59,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:59,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:43:59,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:43:59,016 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-12 00:43:59,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:59,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1549061217, now seen corresponding path program 1 times [2023-11-12 00:43:59,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:59,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293094840] [2023-11-12 00:43:59,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:59,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:59,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:59,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293094840] [2023-11-12 00:43:59,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293094840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:59,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:59,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:43:59,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664844407] [2023-11-12 00:43:59,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:59,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:43:59,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:59,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:43:59,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:59,188 INFO L87 Difference]: Start difference. First operand 24440 states and 107266 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:59,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:59,713 INFO L93 Difference]: Finished difference Result 44004 states and 193003 transitions. [2023-11-12 00:43:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:43:59,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-12 00:43:59,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:00,444 INFO L225 Difference]: With dead ends: 44004 [2023-11-12 00:44:00,444 INFO L226 Difference]: Without dead ends: 44004 [2023-11-12 00:44:00,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:44:00,446 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 48 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:00,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 8 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:44:00,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44004 states. [2023-11-12 00:44:02,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44004 to 31292. [2023-11-12 00:44:02,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31292 states, 28891 states have (on average 5.232079194212731) internal successors, (151160), 31291 states have internal predecessors, (151160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31292 states to 31292 states and 151160 transitions. [2023-11-12 00:44:02,394 INFO L78 Accepts]: Start accepts. Automaton has 31292 states and 151160 transitions. Word has length 5 [2023-11-12 00:44:02,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:02,395 INFO L495 AbstractCegarLoop]: Abstraction has 31292 states and 151160 transitions. [2023-11-12 00:44:02,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:02,395 INFO L276 IsEmpty]: Start isEmpty. Operand 31292 states and 151160 transitions. [2023-11-12 00:44:02,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:44:02,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:02,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:44:02,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:44:02,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-12 00:44:02,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:02,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1549061218, now seen corresponding path program 1 times [2023-11-12 00:44:02,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:02,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704232274] [2023-11-12 00:44:02,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:02,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:02,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:02,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:02,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704232274] [2023-11-12 00:44:02,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704232274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:02,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:02,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:44:02,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007773371] [2023-11-12 00:44:02,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:02,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:44:02,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:02,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:44:02,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:44:02,454 INFO L87 Difference]: Start difference. First operand 31292 states and 151160 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:02,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:02,752 INFO L93 Difference]: Finished difference Result 25982 states and 123034 transitions. [2023-11-12 00:44:02,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:44:02,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-12 00:44:02,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:02,889 INFO L225 Difference]: With dead ends: 25982 [2023-11-12 00:44:02,889 INFO L226 Difference]: Without dead ends: 25982 [2023-11-12 00:44:02,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:44:02,890 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:02,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 4 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:44:02,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25982 states. [2023-11-12 00:44:04,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25982 to 25982. [2023-11-12 00:44:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25982 states, 24218 states have (on average 5.0802708729044515) internal successors, (123034), 25981 states have internal predecessors, (123034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:04,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25982 states to 25982 states and 123034 transitions. [2023-11-12 00:44:04,281 INFO L78 Accepts]: Start accepts. Automaton has 25982 states and 123034 transitions. Word has length 5 [2023-11-12 00:44:04,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:04,281 INFO L495 AbstractCegarLoop]: Abstraction has 25982 states and 123034 transitions. [2023-11-12 00:44:04,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:04,282 INFO L276 IsEmpty]: Start isEmpty. Operand 25982 states and 123034 transitions. [2023-11-12 00:44:04,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:44:04,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:04,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:44:04,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:44:04,282 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-12 00:44:04,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:04,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1549061219, now seen corresponding path program 1 times [2023-11-12 00:44:04,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:04,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842174983] [2023-11-12 00:44:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:04,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:04,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:04,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842174983] [2023-11-12 00:44:04,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842174983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:04,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:04,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:44:04,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974906624] [2023-11-12 00:44:04,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:04,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:44:04,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:04,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:44:04,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:44:04,376 INFO L87 Difference]: Start difference. First operand 25982 states and 123034 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:05,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:05,399 INFO L93 Difference]: Finished difference Result 43271 states and 202981 transitions. [2023-11-12 00:44:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:44:05,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-12 00:44:05,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted.