./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ --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 7b8a2d8a35be535b4f8c573d98b12278b19043c6b0cec82927e2ac6d7dd36ebb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:20:00,518 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:20:00,591 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:20:00,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:20:00,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:20:00,625 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:20:00,626 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:20:00,626 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:20:00,627 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:20:00,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:20:00,628 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:20:00,629 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:20:00,629 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:20:00,630 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:20:00,631 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:20:00,631 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:20:00,632 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:20:00,632 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:20:00,633 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:20:00,633 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:20:00,634 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:20:00,635 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:20:00,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:20:00,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:20:00,636 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:20:00,637 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:20:00,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:20:00,638 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:20:00,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:20:00,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:20:00,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:20:00,640 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:20:00,640 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:20:00,640 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:20:00,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:20:00,641 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:20:00,642 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:20:00,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:20:00,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:20:00,643 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:20:00,643 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:20:00,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:20:00,644 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:20:00,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:20:00,644 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:20:00,645 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:20:00,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:20:00,645 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_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b8a2d8a35be535b4f8c573d98b12278b19043c6b0cec82927e2ac6d7dd36ebb [2023-11-19 05:20:00,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:20:00,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:20:00,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:20:00,964 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:20:00,965 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:20:00,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true.i [2023-11-19 05:20:04,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:20:04,738 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:20:04,738 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true.i [2023-11-19 05:20:04,757 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ/data/c5cf23973/0b3da864ee124836bce98144b183d5c0/FLAG05c1af6a2 [2023-11-19 05:20:04,771 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ/data/c5cf23973/0b3da864ee124836bce98144b183d5c0 [2023-11-19 05:20:04,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:20:04,775 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:20:04,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:20:04,777 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:20:04,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:20:04,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:04" (1/1) ... [2023-11-19 05:20:04,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ae360d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:04, skipping insertion in model container [2023-11-19 05:20:04,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:04" (1/1) ... [2023-11-19 05:20:04,831 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:20:05,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:20:05,374 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:20:05,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:20:05,507 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:20:05,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:05 WrapperNode [2023-11-19 05:20:05,508 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:20:05,510 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:20:05,510 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:20:05,510 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:20:05,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:05" (1/1) ... [2023-11-19 05:20:05,537 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:05" (1/1) ... [2023-11-19 05:20:05,574 INFO L138 Inliner]: procedures = 163, calls = 39, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 126 [2023-11-19 05:20:05,579 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:20:05,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:20:05,580 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:20:05,580 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:20:05,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:05" (1/1) ... [2023-11-19 05:20:05,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:05" (1/1) ... [2023-11-19 05:20:05,615 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:05" (1/1) ... [2023-11-19 05:20:05,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:05" (1/1) ... [2023-11-19 05:20:05,623 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:05" (1/1) ... [2023-11-19 05:20:05,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:05" (1/1) ... [2023-11-19 05:20:05,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:05" (1/1) ... [2023-11-19 05:20:05,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:05" (1/1) ... [2023-11-19 05:20:05,659 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:20:05,660 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:20:05,660 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:20:05,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:20:05,662 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:05" (1/1) ... [2023-11-19 05:20:05,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:20:05,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:05,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:20:05,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:20:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:20:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 05:20:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:20:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:20:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 05:20:05,739 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 05:20:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:20:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:20:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:20:05,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:20:05,741 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:20:05,878 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:20:05,880 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:20:06,212 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:20:06,222 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:20:06,223 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:20:06,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:06 BoogieIcfgContainer [2023-11-19 05:20:06,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:20:06,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:20:06,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:20:06,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:20:06,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:20:04" (1/3) ... [2023-11-19 05:20:06,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16605cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:06, skipping insertion in model container [2023-11-19 05:20:06,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:05" (2/3) ... [2023-11-19 05:20:06,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16605cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:06, skipping insertion in model container [2023-11-19 05:20:06,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:06" (3/3) ... [2023-11-19 05:20:06,236 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true.i [2023-11-19 05:20:06,245 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 05:20:06,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:20:06,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 05:20:06,257 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:20:06,417 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:20:06,464 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:20:06,486 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 150 transitions, 304 flow [2023-11-19 05:20:06,491 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 150 transitions, 304 flow [2023-11-19 05:20:06,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 150 transitions, 304 flow [2023-11-19 05:20:06,607 INFO L124 PetriNetUnfolderBase]: 7/153 cut-off events. [2023-11-19 05:20:06,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 05:20:06,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 153 events. 7/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 148 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2023-11-19 05:20:06,625 INFO L119 LiptonReduction]: Number of co-enabled transitions 4560 [2023-11-19 05:20:13,392 INFO L134 LiptonReduction]: Checked pairs total: 12547 [2023-11-19 05:20:13,392 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-11-19 05:20:13,401 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 34 transitions, 72 flow [2023-11-19 05:20:13,431 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 165 states, 156 states have (on average 2.108974358974359) internal successors, (329), 164 states have internal predecessors, (329), 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) [2023-11-19 05:20:13,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:20:13,459 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;@23791ba2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:20:13,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 05:20:13,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 156 states have (on average 2.108974358974359) internal successors, (329), 164 states have internal predecessors, (329), 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) [2023-11-19 05:20:13,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:20:13,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:13,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:20:13,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 05:20:13,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:13,476 INFO L85 PathProgramCache]: Analyzing trace with hash 18437838, now seen corresponding path program 1 times [2023-11-19 05:20:13,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:13,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416197699] [2023-11-19 05:20:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:13,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:13,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:13,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416197699] [2023-11-19 05:20:13,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416197699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:13,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:13,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:20:13,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487741009] [2023-11-19 05:20:13,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:13,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:20:13,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:13,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:20:13,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:20:13,734 INFO L87 Difference]: Start difference. First operand has 165 states, 156 states have (on average 2.108974358974359) internal successors, (329), 164 states have internal predecessors, (329), 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, 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) [2023-11-19 05:20:13,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:13,832 INFO L93 Difference]: Finished difference Result 165 states and 306 transitions. [2023-11-19 05:20:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:20:13,835 INFO L78 Accepts]: Start accepts. Automaton has has 2 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 [2023-11-19 05:20:13,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:13,852 INFO L225 Difference]: With dead ends: 165 [2023-11-19 05:20:13,852 INFO L226 Difference]: Without dead ends: 160 [2023-11-19 05:20:13,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:20:13,858 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:13,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:13,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-19 05:20:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-11-19 05:20:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 152 states have (on average 1.9407894736842106) internal successors, (295), 159 states have internal predecessors, (295), 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) [2023-11-19 05:20:13,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 295 transitions. [2023-11-19 05:20:13,913 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 295 transitions. Word has length 4 [2023-11-19 05:20:13,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:13,913 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 295 transitions. [2023-11-19 05:20:13,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2023-11-19 05:20:13,914 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 295 transitions. [2023-11-19 05:20:13,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:20:13,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:13,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:20:13,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:20:13,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 05:20:13,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:13,917 INFO L85 PathProgramCache]: Analyzing trace with hash 537042570, now seen corresponding path program 1 times [2023-11-19 05:20:13,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:13,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303946056] [2023-11-19 05:20:13,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:13,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:14,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:14,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303946056] [2023-11-19 05:20:14,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303946056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:14,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:14,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:20:14,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489627945] [2023-11-19 05:20:14,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:14,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:20:14,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:14,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:20:14,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:20:14,062 INFO L87 Difference]: Start difference. First operand 160 states and 295 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:14,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:14,115 INFO L93 Difference]: Finished difference Result 147 states and 269 transitions. [2023-11-19 05:20:14,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:20:14,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:20:14,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:14,117 INFO L225 Difference]: With dead ends: 147 [2023-11-19 05:20:14,117 INFO L226 Difference]: Without dead ends: 147 [2023-11-19 05:20:14,117 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 [2023-11-19 05:20:14,119 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 23 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:14,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 8 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:14,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-19 05:20:14,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-19 05:20:14,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 142 states have (on average 1.8943661971830985) internal successors, (269), 146 states have internal predecessors, (269), 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) [2023-11-19 05:20:14,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 269 transitions. [2023-11-19 05:20:14,142 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 269 transitions. Word has length 6 [2023-11-19 05:20:14,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:14,142 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 269 transitions. [2023-11-19 05:20:14,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:14,143 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 269 transitions. [2023-11-19 05:20:14,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:20:14,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:14,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:20:14,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:20:14,144 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 05:20:14,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:14,145 INFO L85 PathProgramCache]: Analyzing trace with hash 537042493, now seen corresponding path program 1 times [2023-11-19 05:20:14,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:14,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239814688] [2023-11-19 05:20:14,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:14,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:14,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:14,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239814688] [2023-11-19 05:20:14,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239814688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:14,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:14,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:20:14,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008102863] [2023-11-19 05:20:14,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:14,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:20:14,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:14,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:20:14,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:20:14,274 INFO L87 Difference]: Start difference. First operand 147 states and 269 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:14,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:14,337 INFO L93 Difference]: Finished difference Result 134 states and 243 transitions. [2023-11-19 05:20:14,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:20:14,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:20:14,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:14,339 INFO L225 Difference]: With dead ends: 134 [2023-11-19 05:20:14,339 INFO L226 Difference]: Without dead ends: 114 [2023-11-19 05:20:14,340 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 [2023-11-19 05:20:14,341 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:14,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 8 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-19 05:20:14,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-11-19 05:20:14,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.8214285714285714) internal successors, (204), 113 states have internal predecessors, (204), 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) [2023-11-19 05:20:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 204 transitions. [2023-11-19 05:20:14,373 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 204 transitions. Word has length 6 [2023-11-19 05:20:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:14,373 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 204 transitions. [2023-11-19 05:20:14,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:14,374 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 204 transitions. [2023-11-19 05:20:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:20:14,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:14,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:14,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:20:14,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 05:20:14,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:14,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2010204873, now seen corresponding path program 1 times [2023-11-19 05:20:14,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:14,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257486030] [2023-11-19 05:20:14,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:14,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:14,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:14,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257486030] [2023-11-19 05:20:14,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257486030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:14,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:14,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:20:14,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681206037] [2023-11-19 05:20:14,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:14,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:20:14,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:14,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:20:14,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:20:14,500 INFO L87 Difference]: Start difference. First operand 114 states and 204 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2023-11-19 05:20:14,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:14,581 INFO L93 Difference]: Finished difference Result 136 states and 235 transitions. [2023-11-19 05:20:14,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:20:14,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 8 [2023-11-19 05:20:14,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:14,583 INFO L225 Difference]: With dead ends: 136 [2023-11-19 05:20:14,584 INFO L226 Difference]: Without dead ends: 94 [2023-11-19 05:20:14,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:20:14,590 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:14,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 28 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:14,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-19 05:20:14,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-11-19 05:20:14,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 92 states have (on average 1.7826086956521738) internal successors, (164), 93 states have internal predecessors, (164), 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) [2023-11-19 05:20:14,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 164 transitions. [2023-11-19 05:20:14,609 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 164 transitions. Word has length 8 [2023-11-19 05:20:14,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:14,610 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 164 transitions. [2023-11-19 05:20:14,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2023-11-19 05:20:14,610 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 164 transitions. [2023-11-19 05:20:14,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:20:14,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:14,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:14,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:20:14,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 05:20:14,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:14,612 INFO L85 PathProgramCache]: Analyzing trace with hash -826758070, now seen corresponding path program 1 times [2023-11-19 05:20:14,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:14,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584600294] [2023-11-19 05:20:14,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:14,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:14,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:14,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:14,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584600294] [2023-11-19 05:20:14,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584600294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:14,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:14,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:20:14,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395018213] [2023-11-19 05:20:14,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:14,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:20:14,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:20:14,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:20:14,839 INFO L87 Difference]: Start difference. First operand 94 states and 164 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-19 05:20:14,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:14,935 INFO L93 Difference]: Finished difference Result 120 states and 204 transitions. [2023-11-19 05:20:14,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:20:14,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2023-11-19 05:20:14,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:14,937 INFO L225 Difference]: With dead ends: 120 [2023-11-19 05:20:14,937 INFO L226 Difference]: Without dead ends: 120 [2023-11-19 05:20:14,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:20:14,939 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 35 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:14,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 39 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:14,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-19 05:20:14,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2023-11-19 05:20:14,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.798165137614679) internal successors, (196), 110 states have internal predecessors, (196), 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) [2023-11-19 05:20:14,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 196 transitions. [2023-11-19 05:20:14,947 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 196 transitions. Word has length 12 [2023-11-19 05:20:14,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:14,948 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 196 transitions. [2023-11-19 05:20:14,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-19 05:20:14,948 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 196 transitions. [2023-11-19 05:20:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:20:14,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:14,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:14,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:20:14,950 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 05:20:14,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:14,951 INFO L85 PathProgramCache]: Analyzing trace with hash -826758048, now seen corresponding path program 1 times [2023-11-19 05:20:14,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:14,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34377208] [2023-11-19 05:20:14,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:14,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:15,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:15,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34377208] [2023-11-19 05:20:15,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34377208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:15,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:15,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:20:15,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687405221] [2023-11-19 05:20:15,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:15,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:20:15,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:15,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:20:15,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:20:15,072 INFO L87 Difference]: Start difference. First operand 111 states and 196 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-19 05:20:15,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:15,175 INFO L93 Difference]: Finished difference Result 110 states and 185 transitions. [2023-11-19 05:20:15,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:20:15,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2023-11-19 05:20:15,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:15,177 INFO L225 Difference]: With dead ends: 110 [2023-11-19 05:20:15,177 INFO L226 Difference]: Without dead ends: 90 [2023-11-19 05:20:15,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:20:15,178 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 30 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:15,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 53 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:15,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-19 05:20:15,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-11-19 05:20:15,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 88 states have (on average 1.7727272727272727) internal successors, (156), 89 states have internal predecessors, (156), 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) [2023-11-19 05:20:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 156 transitions. [2023-11-19 05:20:15,185 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 156 transitions. Word has length 12 [2023-11-19 05:20:15,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:15,186 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 156 transitions. [2023-11-19 05:20:15,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-19 05:20:15,186 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 156 transitions. [2023-11-19 05:20:15,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:20:15,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:15,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:15,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:20:15,188 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 05:20:15,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:15,189 INFO L85 PathProgramCache]: Analyzing trace with hash 138660202, now seen corresponding path program 1 times [2023-11-19 05:20:15,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:15,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063974703] [2023-11-19 05:20:15,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:15,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:15,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:15,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063974703] [2023-11-19 05:20:15,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063974703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:15,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:15,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:20:15,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782998953] [2023-11-19 05:20:15,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:15,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:20:15,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:15,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:20:15,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:20:15,291 INFO L87 Difference]: Start difference. First operand 90 states and 156 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-19 05:20:15,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:15,342 INFO L93 Difference]: Finished difference Result 88 states and 143 transitions. [2023-11-19 05:20:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:20:15,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 [2023-11-19 05:20:15,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:15,344 INFO L225 Difference]: With dead ends: 88 [2023-11-19 05:20:15,344 INFO L226 Difference]: Without dead ends: 86 [2023-11-19 05:20:15,344 INFO L412 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 [2023-11-19 05:20:15,345 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:15,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 8 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:15,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-19 05:20:15,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 70. [2023-11-19 05:20:15,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 68 states have (on average 1.588235294117647) internal successors, (108), 69 states have internal predecessors, (108), 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) [2023-11-19 05:20:15,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 108 transitions. [2023-11-19 05:20:15,350 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 108 transitions. Word has length 13 [2023-11-19 05:20:15,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:15,351 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 108 transitions. [2023-11-19 05:20:15,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-19 05:20:15,351 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 108 transitions. [2023-11-19 05:20:15,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:20:15,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:15,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:15,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:20:15,353 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 05:20:15,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:15,353 INFO L85 PathProgramCache]: Analyzing trace with hash 274868504, now seen corresponding path program 1 times [2023-11-19 05:20:15,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:15,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960424772] [2023-11-19 05:20:15,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:15,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:15,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:15,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960424772] [2023-11-19 05:20:15,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960424772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:15,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:15,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:20:15,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861924282] [2023-11-19 05:20:15,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:15,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:20:15,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:15,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:20:15,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:20:15,463 INFO L87 Difference]: Start difference. First operand 70 states and 108 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2023-11-19 05:20:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:15,531 INFO L93 Difference]: Finished difference Result 62 states and 95 transitions. [2023-11-19 05:20:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:20:15,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 [2023-11-19 05:20:15,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:15,532 INFO L225 Difference]: With dead ends: 62 [2023-11-19 05:20:15,532 INFO L226 Difference]: Without dead ends: 62 [2023-11-19 05:20:15,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:20:15,534 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 52 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:15,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 21 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:15,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-19 05:20:15,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-19 05:20:15,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.5573770491803278) internal successors, (95), 61 states have internal predecessors, (95), 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) [2023-11-19 05:20:15,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 95 transitions. [2023-11-19 05:20:15,537 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 95 transitions. Word has length 14 [2023-11-19 05:20:15,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:15,537 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 95 transitions. [2023-11-19 05:20:15,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2023-11-19 05:20:15,538 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 95 transitions. [2023-11-19 05:20:15,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:20:15,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:15,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:15,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 05:20:15,539 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 05:20:15,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:15,540 INFO L85 PathProgramCache]: Analyzing trace with hash 274868526, now seen corresponding path program 1 times [2023-11-19 05:20:15,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:15,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832893916] [2023-11-19 05:20:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:15,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:15,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:15,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832893916] [2023-11-19 05:20:15,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832893916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:15,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:15,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:20:15,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587281877] [2023-11-19 05:20:15,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:15,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:20:15,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:15,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:20:15,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:20:15,635 INFO L87 Difference]: Start difference. First operand 62 states and 95 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-11-19 05:20:15,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:15,744 INFO L93 Difference]: Finished difference Result 58 states and 90 transitions. [2023-11-19 05:20:15,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:20:15,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 [2023-11-19 05:20:15,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:15,746 INFO L225 Difference]: With dead ends: 58 [2023-11-19 05:20:15,746 INFO L226 Difference]: Without dead ends: 55 [2023-11-19 05:20:15,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:20:15,748 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 22 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:15,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 20 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:15,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-19 05:20:15,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-11-19 05:20:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 54 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) [2023-11-19 05:20:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 87 transitions. [2023-11-19 05:20:15,752 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 87 transitions. Word has length 14 [2023-11-19 05:20:15,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:15,752 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 87 transitions. [2023-11-19 05:20:15,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-11-19 05:20:15,752 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 87 transitions. [2023-11-19 05:20:15,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:20:15,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:15,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:15,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 05:20:15,757 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 05:20:15,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:15,757 INFO L85 PathProgramCache]: Analyzing trace with hash -677889072, now seen corresponding path program 1 times [2023-11-19 05:20:15,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:15,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610835155] [2023-11-19 05:20:15,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:15,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:16,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:16,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610835155] [2023-11-19 05:20:16,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610835155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:16,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:16,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:20:16,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171585536] [2023-11-19 05:20:16,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:16,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:20:16,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:16,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:20:16,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:20:16,075 INFO L87 Difference]: Start difference. First operand 55 states and 87 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:16,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:16,129 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2023-11-19 05:20:16,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:20:16,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 05:20:16,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:16,131 INFO L225 Difference]: With dead ends: 54 [2023-11-19 05:20:16,131 INFO L226 Difference]: Without dead ends: 54 [2023-11-19 05:20:16,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:20:16,132 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:16,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 9 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:16,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-19 05:20:16,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2023-11-19 05:20:16,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.5961538461538463) internal successors, (83), 52 states have internal predecessors, (83), 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) [2023-11-19 05:20:16,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 83 transitions. [2023-11-19 05:20:16,137 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 83 transitions. Word has length 17 [2023-11-19 05:20:16,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:16,137 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 83 transitions. [2023-11-19 05:20:16,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:16,138 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 83 transitions. [2023-11-19 05:20:16,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 05:20:16,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:16,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:16,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 05:20:16,141 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 05:20:16,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:16,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1591581740, now seen corresponding path program 1 times [2023-11-19 05:20:16,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:16,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634437390] [2023-11-19 05:20:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:16,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:20:16,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:20:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:20:16,240 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:20:16,240 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:20:16,241 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2023-11-19 05:20:16,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2023-11-19 05:20:16,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 7 remaining) [2023-11-19 05:20:16,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-19 05:20:16,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2023-11-19 05:20:16,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2023-11-19 05:20:16,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2023-11-19 05:20:16,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 05:20:16,247 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:16,253 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 05:20:16,254 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:20:16,308 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-19 05:20:16,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:20:16 BasicIcfg [2023-11-19 05:20:16,320 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:20:16,320 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:20:16,321 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:20:16,321 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:20:16,321 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:06" (3/4) ... [2023-11-19 05:20:16,322 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 05:20:16,347 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-19 05:20:16,415 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:20:16,415 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:20:16,416 INFO L158 Benchmark]: Toolchain (without parser) took 11640.33ms. Allocated memory was 159.4MB in the beginning and 247.5MB in the end (delta: 88.1MB). Free memory was 111.0MB in the beginning and 180.8MB in the end (delta: -69.9MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2023-11-19 05:20:16,416 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 159.4MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:20:16,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 731.96ms. Allocated memory is still 159.4MB. Free memory was 110.7MB in the beginning and 91.2MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 05:20:16,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.23ms. Allocated memory is still 159.4MB. Free memory was 91.2MB in the beginning and 89.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:20:16,417 INFO L158 Benchmark]: Boogie Preprocessor took 79.70ms. Allocated memory is still 159.4MB. Free memory was 88.5MB in the beginning and 87.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:20:16,418 INFO L158 Benchmark]: RCFGBuilder took 567.22ms. Allocated memory is still 159.4MB. Free memory was 87.0MB in the beginning and 70.8MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 05:20:16,419 INFO L158 Benchmark]: TraceAbstraction took 10090.18ms. Allocated memory was 159.4MB in the beginning and 247.5MB in the end (delta: 88.1MB). Free memory was 70.2MB in the beginning and 185.0MB in the end (delta: -114.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:20:16,419 INFO L158 Benchmark]: Witness Printer took 94.56ms. Allocated memory is still 247.5MB. Free memory was 185.0MB in the beginning and 180.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:20:16,421 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 159.4MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 731.96ms. Allocated memory is still 159.4MB. Free memory was 110.7MB in the beginning and 91.2MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.23ms. Allocated memory is still 159.4MB. Free memory was 91.2MB in the beginning and 89.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.70ms. Allocated memory is still 159.4MB. Free memory was 88.5MB in the beginning and 87.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 567.22ms. Allocated memory is still 159.4MB. Free memory was 87.0MB in the beginning and 70.8MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 10090.18ms. Allocated memory was 159.4MB in the beginning and 247.5MB in the end (delta: 88.1MB). Free memory was 70.2MB in the beginning and 185.0MB in the end (delta: -114.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 94.56ms. Allocated memory is still 247.5MB. Free memory was 185.0MB in the beginning and 180.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9s, 146 PlacesBefore, 34 PlacesAfterwards, 150 TransitionsBefore, 34 TransitionsAfterwards, 4560 CoEnabledTransitionPairs, 8 FixpointIterations, 44 TrivialSequentialCompositions, 83 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 34 ConcurrentYvCompositions, 4 ChoiceCompositions, 165 TotalNumberOfCompositions, 12547 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6756, independent: 6379, independent conditional: 0, independent unconditional: 6379, dependent: 377, dependent conditional: 0, dependent unconditional: 377, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3628, independent: 3514, independent conditional: 0, independent unconditional: 3514, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3628, independent: 3374, independent conditional: 0, independent unconditional: 3374, dependent: 254, dependent conditional: 0, dependent unconditional: 254, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 254, independent: 140, independent conditional: 0, independent unconditional: 140, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 559, independent: 202, independent conditional: 0, independent unconditional: 202, dependent: 357, dependent conditional: 0, dependent unconditional: 357, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6756, independent: 2865, independent conditional: 0, independent unconditional: 2865, dependent: 263, dependent conditional: 0, dependent unconditional: 263, unknown: 3628, unknown conditional: 0, unknown unconditional: 3628] , Statistics on independence cache: Total cache size (in pairs): 299, Positive cache size: 257, Positive conditional cache size: 0, Positive unconditional cache size: 257, Negative cache size: 42, Negative conditional cache size: 0, Negative unconditional cache size: 42, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 701]: integer overflow possible integer overflow possible We found a FailurePath: [L682] 0 int g = 0; [L683] 0 int h = 0; [L684] 0 int i = 0; [L685] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L686] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L687] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L710] 0 int x = __VERIFIER_nondet_int(); [L711] COND TRUE 0 x > -1000 [L712] 0 pthread_t id; [L713] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=0, id={6:0}, x=2147483617] [L689] 1 int x = __VERIFIER_nondet_int(); [L690] 1 int y = __VERIFIER_nondet_int(); [L691] 1 int z = __VERIFIER_nondet_int(); [L692] COND TRUE 1 x < 1000 [L716] 0 i = 11 VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=11, id={6:0}, x=2147483617] [L717] 0 g = x [L718] EXPR 0 x - 17 [L718] 0 h = x - 17 VAL [A={3:0}, B={4:0}, C={5:0}, g=2147483617, h=2147483600, i=11, id={6:0}, x=2147483617] [L721] 0 h = x VAL [A={3:0}, B={4:0}, C={5:0}, g=2147483617, h=2147483617, i=11, id={6:0}, x=2147483617] [L695] 1 x = g VAL [A={3:0}, B={4:0}, C={5:0}, arg={0:0}, arg={0:0}, g=2147483617, h=2147483617, i=11, x=2147483617, y=0, z=0] [L696] 1 y = h [L697] CALL 1 __VERIFIER_assert(y <= x) [L19] COND FALSE 1 !(!(cond)) VAL [A={3:0}, B={4:0}, C={5:0}, \old(cond)=1, cond=1, g=2147483617, h=2147483617, i=11] [L697] RET 1 __VERIFIER_assert(y <= x) [L699] CALL 1 __VERIFIER_assert(x == y) [L19] COND FALSE 1 !(!(cond)) [L699] RET 1 __VERIFIER_assert(x == y) [L701] 1 x + 31 VAL [A={3:0}, B={4:0}, C={5:0}, arg={0:0}, arg={0:0}, g=2147483617, h=2147483617, i=11, x=2147483617, y=2147483617, z=0] - UnprovableResult [Line: 718]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 701]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 214 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 9.8s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 220 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 220 mSDsluCounter, 202 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 114 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 494 IncrementalHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 88 mSDtfsCounter, 494 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=0, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 26 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 402 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-19 05:20:16,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f4c14c7-7705-487d-b9cd-ccabbcd09988/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)