./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91 --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 f7b74cf7a2419cab3ab4545eb4bb4cb738b0dd565da7b17a0ca0e4253475f1b6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:16:43,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:16:44,032 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:16:44,037 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:16:44,038 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:16:44,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:16:44,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:16:44,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:16:44,065 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:16:44,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:16:44,066 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:16:44,067 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:16:44,067 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:16:44,068 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:16:44,068 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:16:44,069 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:16:44,069 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:16:44,070 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:16:44,070 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:16:44,071 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:16:44,071 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:16:44,072 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:16:44,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:16:44,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:16:44,074 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:16:44,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:16:44,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:16:44,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:16:44,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:16:44,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:16:44,076 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:16:44,076 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:16:44,077 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:16:44,077 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:16:44,077 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:16:44,077 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:16:44,078 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:16:44,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:16:44,078 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:16:44,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:44,079 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:16:44,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:16:44,084 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:16:44,084 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:16:44,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:16:44,085 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:16:44,085 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:16:44,085 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:16:44,085 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:16:44,086 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_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7b74cf7a2419cab3ab4545eb4bb4cb738b0dd565da7b17a0ca0e4253475f1b6 [2023-11-24 23:16:44,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:16:44,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:16:44,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:16:44,385 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:16:44,386 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:16:44,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2023-11-24 23:16:47,444 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:16:47,708 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:16:47,708 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2023-11-24 23:16:47,720 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/data/da9b8f451/522d6f3ae0384976b8633b4430ffb7cf/FLAG6296cb395 [2023-11-24 23:16:47,733 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/data/da9b8f451/522d6f3ae0384976b8633b4430ffb7cf [2023-11-24 23:16:47,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:16:47,737 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:16:47,738 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:47,738 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:16:47,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:16:47,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:47" (1/1) ... [2023-11-24 23:16:47,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf74c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:47, skipping insertion in model container [2023-11-24 23:16:47,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:47" (1/1) ... [2023-11-24 23:16:47,772 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:16:47,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:47,969 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:16:48,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:48,016 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:16:48,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:48 WrapperNode [2023-11-24 23:16:48,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:48,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:48,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:16:48,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:16:48,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:48" (1/1) ... [2023-11-24 23:16:48,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:48" (1/1) ... [2023-11-24 23:16:48,068 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 215 [2023-11-24 23:16:48,072 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:48,073 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:16:48,075 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:16:48,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:16:48,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:48" (1/1) ... [2023-11-24 23:16:48,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:48" (1/1) ... [2023-11-24 23:16:48,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:48" (1/1) ... [2023-11-24 23:16:48,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:48" (1/1) ... [2023-11-24 23:16:48,105 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:48" (1/1) ... [2023-11-24 23:16:48,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:48" (1/1) ... [2023-11-24 23:16:48,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:48" (1/1) ... [2023-11-24 23:16:48,113 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:48" (1/1) ... [2023-11-24 23:16:48,118 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:16:48,119 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:16:48,119 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:16:48,119 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:16:48,120 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:48" (1/1) ... [2023-11-24 23:16:48,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:48,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:48,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:16:48,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:16:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:16:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 23:16:48,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 23:16:48,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 23:16:48,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 23:16:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 23:16:48,215 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 23:16:48,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:16:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:16:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:16:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:16:48,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:16:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:16:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:16:48,218 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 23:16:48,372 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:16:48,375 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:16:48,935 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:16:49,288 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:16:49,289 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:16:49,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:49 BoogieIcfgContainer [2023-11-24 23:16:49,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:16:49,296 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:16:49,296 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:16:49,300 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:16:49,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:16:47" (1/3) ... [2023-11-24 23:16:49,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cffe401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:49, skipping insertion in model container [2023-11-24 23:16:49,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:48" (2/3) ... [2023-11-24 23:16:49,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cffe401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:49, skipping insertion in model container [2023-11-24 23:16:49,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:49" (3/3) ... [2023-11-24 23:16:49,305 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2023-11-24 23:16:49,314 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 23:16:49,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:16:49,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-24 23:16:49,326 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 23:16:49,427 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 23:16:49,468 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 89 places, 91 transitions, 203 flow [2023-11-24 23:16:50,784 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 23244 states, 22902 states have (on average 3.9028469129333683) internal successors, (89383), 23243 states have internal predecessors, (89383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:50,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:16:50,826 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;@30ff0633, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:16:50,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-24 23:16:50,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 23244 states, 22902 states have (on average 3.9028469129333683) internal successors, (89383), 23243 states have internal predecessors, (89383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:50,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:16:50,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:50,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:50,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:16:50,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:50,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1869205617, now seen corresponding path program 1 times [2023-11-24 23:16:50,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:50,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657779728] [2023-11-24 23:16:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:50,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:51,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:51,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657779728] [2023-11-24 23:16:51,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657779728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:51,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:51,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:16:51,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029839028] [2023-11-24 23:16:51,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:51,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:16:51,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:51,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:16:51,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:51,315 INFO L87 Difference]: Start difference. First operand has 23244 states, 22902 states have (on average 3.9028469129333683) internal successors, (89383), 23243 states have internal predecessors, (89383), 0 states have call successors, (0), 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 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:52,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:52,782 INFO L93 Difference]: Finished difference Result 31356 states and 120731 transitions. [2023-11-24 23:16:52,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:52,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-24 23:16:52,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:53,266 INFO L225 Difference]: With dead ends: 31356 [2023-11-24 23:16:53,266 INFO L226 Difference]: Without dead ends: 31356 [2023-11-24 23:16:53,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:53,271 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 133 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:53,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 178 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:16:53,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31356 states. [2023-11-24 23:16:54,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31356 to 26286. [2023-11-24 23:16:54,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26286 states, 25993 states have (on average 3.9156311314584697) internal successors, (101779), 26285 states have internal predecessors, (101779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:55,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26286 states to 26286 states and 101779 transitions. [2023-11-24 23:16:55,147 INFO L78 Accepts]: Start accepts. Automaton has 26286 states and 101779 transitions. Word has length 7 [2023-11-24 23:16:55,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:55,148 INFO L495 AbstractCegarLoop]: Abstraction has 26286 states and 101779 transitions. [2023-11-24 23:16:55,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:55,149 INFO L276 IsEmpty]: Start isEmpty. Operand 26286 states and 101779 transitions. [2023-11-24 23:16:55,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:16:55,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:55,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:55,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:16:55,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:16:55,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:55,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2110798588, now seen corresponding path program 1 times [2023-11-24 23:16:55,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:55,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825488848] [2023-11-24 23:16:55,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:55,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:55,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:55,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825488848] [2023-11-24 23:16:55,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825488848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:55,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:55,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:16:55,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590579083] [2023-11-24 23:16:55,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:55,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:16:55,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:55,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:16:55,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:55,339 INFO L87 Difference]: Start difference. First operand 26286 states and 101779 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) [2023-11-24 23:16:56,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:56,369 INFO L93 Difference]: Finished difference Result 25272 states and 97985 transitions. [2023-11-24 23:16:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:56,370 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 [2023-11-24 23:16:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:56,731 INFO L225 Difference]: With dead ends: 25272 [2023-11-24 23:16:56,731 INFO L226 Difference]: Without dead ends: 25272 [2023-11-24 23:16:56,752 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 [2023-11-24 23:16:56,754 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 148 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:56,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 106 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:16:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25272 states. [2023-11-24 23:16:57,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25272 to 25272. [2023-11-24 23:16:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25272 states, 25028 states have (on average 3.9150151829950457) internal successors, (97985), 25271 states have internal predecessors, (97985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25272 states to 25272 states and 97985 transitions. [2023-11-24 23:16:58,153 INFO L78 Accepts]: Start accepts. Automaton has 25272 states and 97985 transitions. Word has length 8 [2023-11-24 23:16:58,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:58,154 INFO L495 AbstractCegarLoop]: Abstraction has 25272 states and 97985 transitions. [2023-11-24 23:16:58,154 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) [2023-11-24 23:16:58,154 INFO L276 IsEmpty]: Start isEmpty. Operand 25272 states and 97985 transitions. [2023-11-24 23:16:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:16:58,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:58,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:58,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:16:58,157 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:16:58,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:58,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1010277869, now seen corresponding path program 1 times [2023-11-24 23:16:58,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:58,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252437634] [2023-11-24 23:16:58,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:58,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:58,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:58,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252437634] [2023-11-24 23:16:58,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252437634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:58,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:58,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:16:58,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601845907] [2023-11-24 23:16:58,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:58,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:16:58,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:58,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:16:58,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:58,278 INFO L87 Difference]: Start difference. First operand 25272 states and 97985 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:58,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:58,879 INFO L93 Difference]: Finished difference Result 24258 states and 94191 transitions. [2023-11-24 23:16:58,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:58,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2023-11-24 23:16:58,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:59,087 INFO L225 Difference]: With dead ends: 24258 [2023-11-24 23:16:59,088 INFO L226 Difference]: Without dead ends: 24258 [2023-11-24 23:16:59,088 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 [2023-11-24 23:16:59,097 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 145 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:59,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 106 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:16:59,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24258 states. [2023-11-24 23:17:00,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24258 to 24258. [2023-11-24 23:17:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24258 states, 24063 states have (on average 3.914349831691809) internal successors, (94191), 24257 states have internal predecessors, (94191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24258 states to 24258 states and 94191 transitions. [2023-11-24 23:17:00,239 INFO L78 Accepts]: Start accepts. Automaton has 24258 states and 94191 transitions. Word has length 9 [2023-11-24 23:17:00,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:00,239 INFO L495 AbstractCegarLoop]: Abstraction has 24258 states and 94191 transitions. [2023-11-24 23:17:00,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:00,240 INFO L276 IsEmpty]: Start isEmpty. Operand 24258 states and 94191 transitions. [2023-11-24 23:17:00,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:17:00,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:00,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:00,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:17:00,249 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:00,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:00,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1731255242, now seen corresponding path program 1 times [2023-11-24 23:17:00,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:00,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064758252] [2023-11-24 23:17:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:00,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:00,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:00,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064758252] [2023-11-24 23:17:00,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064758252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:00,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:00,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:17:00,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539634375] [2023-11-24 23:17:00,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:00,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:17:00,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:00,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:17:00,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:00,358 INFO L87 Difference]: Start difference. First operand 24258 states and 94191 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:01,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:01,215 INFO L93 Difference]: Finished difference Result 33074 states and 128389 transitions. [2023-11-24 23:17:01,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:17:01,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2023-11-24 23:17:01,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:01,399 INFO L225 Difference]: With dead ends: 33074 [2023-11-24 23:17:01,400 INFO L226 Difference]: Without dead ends: 33074 [2023-11-24 23:17:01,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:01,409 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 116 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:01,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 197 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:17:01,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33074 states. [2023-11-24 23:17:02,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33074 to 27564. [2023-11-24 23:17:02,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27564 states, 27397 states have (on average 3.9315618498375735) internal successors, (107713), 27563 states have internal predecessors, (107713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:02,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27564 states to 27564 states and 107713 transitions. [2023-11-24 23:17:02,969 INFO L78 Accepts]: Start accepts. Automaton has 27564 states and 107713 transitions. Word has length 9 [2023-11-24 23:17:02,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:02,970 INFO L495 AbstractCegarLoop]: Abstraction has 27564 states and 107713 transitions. [2023-11-24 23:17:02,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:02,971 INFO L276 IsEmpty]: Start isEmpty. Operand 27564 states and 107713 transitions. [2023-11-24 23:17:02,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:17:02,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:02,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:02,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:17:02,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:02,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:02,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1253843194, now seen corresponding path program 1 times [2023-11-24 23:17:02,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:02,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472645325] [2023-11-24 23:17:02,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:02,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:03,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:03,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:03,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472645325] [2023-11-24 23:17:03,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472645325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:03,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:03,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:17:03,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533145422] [2023-11-24 23:17:03,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:03,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:17:03,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:03,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:17:03,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:03,132 INFO L87 Difference]: Start difference. First operand 27564 states and 107713 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:03,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:03,638 INFO L93 Difference]: Finished difference Result 26412 states and 103375 transitions. [2023-11-24 23:17:03,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:17:03,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2023-11-24 23:17:03,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:03,784 INFO L225 Difference]: With dead ends: 26412 [2023-11-24 23:17:03,784 INFO L226 Difference]: Without dead ends: 26412 [2023-11-24 23:17:03,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:17:03,786 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 194 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:03,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 197 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:17:03,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26412 states. [2023-11-24 23:17:04,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26412 to 26412. [2023-11-24 23:17:04,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26412 states, 26287 states have (on average 3.9325522121200596) internal successors, (103375), 26411 states have internal predecessors, (103375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26412 states to 26412 states and 103375 transitions. [2023-11-24 23:17:04,988 INFO L78 Accepts]: Start accepts. Automaton has 26412 states and 103375 transitions. Word has length 10 [2023-11-24 23:17:04,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:04,988 INFO L495 AbstractCegarLoop]: Abstraction has 26412 states and 103375 transitions. [2023-11-24 23:17:04,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:04,989 INFO L276 IsEmpty]: Start isEmpty. Operand 26412 states and 103375 transitions. [2023-11-24 23:17:04,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:17:04,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:04,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:04,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:17:04,991 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:04,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:04,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1253842169, now seen corresponding path program 1 times [2023-11-24 23:17:04,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:04,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709828833] [2023-11-24 23:17:04,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:04,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:05,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:05,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709828833] [2023-11-24 23:17:05,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709828833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:05,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:05,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:17:05,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739016422] [2023-11-24 23:17:05,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:05,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:17:05,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:05,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:17:05,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:05,068 INFO L87 Difference]: Start difference. First operand 26412 states and 103375 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:05,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:05,468 INFO L93 Difference]: Finished difference Result 31020 states and 119557 transitions. [2023-11-24 23:17:05,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:17:05,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2023-11-24 23:17:05,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:05,579 INFO L225 Difference]: With dead ends: 31020 [2023-11-24 23:17:05,580 INFO L226 Difference]: Without dead ends: 31020 [2023-11-24 23:17:05,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:05,580 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 115 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:05,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 202 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:17:06,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31020 states. [2023-11-24 23:17:06,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31020 to 26412. [2023-11-24 23:17:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26412 states, 26287 states have (on average 3.8887282687259863) internal successors, (102223), 26411 states have internal predecessors, (102223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:06,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26412 states to 26412 states and 102223 transitions. [2023-11-24 23:17:06,935 INFO L78 Accepts]: Start accepts. Automaton has 26412 states and 102223 transitions. Word has length 10 [2023-11-24 23:17:06,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:06,936 INFO L495 AbstractCegarLoop]: Abstraction has 26412 states and 102223 transitions. [2023-11-24 23:17:06,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:06,936 INFO L276 IsEmpty]: Start isEmpty. Operand 26412 states and 102223 transitions. [2023-11-24 23:17:06,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:17:06,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:06,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:06,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 23:17:06,938 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:06,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:06,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2129305666, now seen corresponding path program 1 times [2023-11-24 23:17:06,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:06,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940299302] [2023-11-24 23:17:06,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:06,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:07,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:07,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:07,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940299302] [2023-11-24 23:17:07,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940299302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:07,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:07,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:17:07,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474420677] [2023-11-24 23:17:07,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:07,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:17:07,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:07,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:17:07,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:07,022 INFO L87 Difference]: Start difference. First operand 26412 states and 102223 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:07,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:07,918 INFO L93 Difference]: Finished difference Result 25356 states and 98295 transitions. [2023-11-24 23:17:07,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:17:07,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2023-11-24 23:17:07,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:08,041 INFO L225 Difference]: With dead ends: 25356 [2023-11-24 23:17:08,041 INFO L226 Difference]: Without dead ends: 25356 [2023-11-24 23:17:08,042 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 [2023-11-24 23:17:08,043 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 138 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:08,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 94 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:17:08,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25356 states. [2023-11-24 23:17:08,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25356 to 25356. [2023-11-24 23:17:08,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25356 states, 25252 states have (on average 3.8925629653096783) internal successors, (98295), 25355 states have internal predecessors, (98295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25356 states to 25356 states and 98295 transitions. [2023-11-24 23:17:09,190 INFO L78 Accepts]: Start accepts. Automaton has 25356 states and 98295 transitions. Word has length 10 [2023-11-24 23:17:09,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:09,191 INFO L495 AbstractCegarLoop]: Abstraction has 25356 states and 98295 transitions. [2023-11-24 23:17:09,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:09,191 INFO L276 IsEmpty]: Start isEmpty. Operand 25356 states and 98295 transitions. [2023-11-24 23:17:09,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:17:09,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:09,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:09,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 23:17:09,198 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:09,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:09,199 INFO L85 PathProgramCache]: Analyzing trace with hash -214432650, now seen corresponding path program 1 times [2023-11-24 23:17:09,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:09,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671512174] [2023-11-24 23:17:09,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:09,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:09,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:09,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671512174] [2023-11-24 23:17:09,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671512174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:09,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:09,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:17:09,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191642862] [2023-11-24 23:17:09,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:09,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:17:09,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:09,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:17:09,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:17:09,306 INFO L87 Difference]: Start difference. First operand 25356 states and 98295 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:09,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:09,793 INFO L93 Difference]: Finished difference Result 25356 states and 98295 transitions. [2023-11-24 23:17:09,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:17:09,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-24 23:17:09,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:09,945 INFO L225 Difference]: With dead ends: 25356 [2023-11-24 23:17:09,946 INFO L226 Difference]: Without dead ends: 25212 [2023-11-24 23:17:09,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:17:09,947 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 250 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:09,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 254 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:17:10,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25212 states. [2023-11-24 23:17:10,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25212 to 24124. [2023-11-24 23:17:10,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24124 states, 24055 states have (on average 3.8860112242776967) internal successors, (93478), 24123 states have internal predecessors, (93478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:11,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24124 states to 24124 states and 93478 transitions. [2023-11-24 23:17:11,334 INFO L78 Accepts]: Start accepts. Automaton has 24124 states and 93478 transitions. Word has length 11 [2023-11-24 23:17:11,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:11,334 INFO L495 AbstractCegarLoop]: Abstraction has 24124 states and 93478 transitions. [2023-11-24 23:17:11,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:11,335 INFO L276 IsEmpty]: Start isEmpty. Operand 24124 states and 93478 transitions. [2023-11-24 23:17:11,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:17:11,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:11,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:11,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 23:17:11,338 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:11,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1182208111, now seen corresponding path program 1 times [2023-11-24 23:17:11,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:11,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950912166] [2023-11-24 23:17:11,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:11,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:11,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:11,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950912166] [2023-11-24 23:17:11,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950912166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:11,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:11,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:17:11,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802833515] [2023-11-24 23:17:11,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:11,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:17:11,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:11,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:17:11,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:11,471 INFO L87 Difference]: Start difference. First operand 24124 states and 93478 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:11,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:11,858 INFO L93 Difference]: Finished difference Result 32588 states and 126436 transitions. [2023-11-24 23:17:11,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:17:11,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-24 23:17:11,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:12,014 INFO L225 Difference]: With dead ends: 32588 [2023-11-24 23:17:12,014 INFO L226 Difference]: Without dead ends: 32588 [2023-11-24 23:17:12,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:12,015 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 108 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:12,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 173 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:17:12,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32588 states. [2023-11-24 23:17:13,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32588 to 27298. [2023-11-24 23:17:13,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27298 states, 27239 states have (on average 3.9107162524321746) internal successors, (106524), 27297 states have internal predecessors, (106524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27298 states to 27298 states and 106524 transitions. [2023-11-24 23:17:13,310 INFO L78 Accepts]: Start accepts. Automaton has 27298 states and 106524 transitions. Word has length 11 [2023-11-24 23:17:13,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:13,310 INFO L495 AbstractCegarLoop]: Abstraction has 27298 states and 106524 transitions. [2023-11-24 23:17:13,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:13,311 INFO L276 IsEmpty]: Start isEmpty. Operand 27298 states and 106524 transitions. [2023-11-24 23:17:13,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:17:13,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:13,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:13,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 23:17:13,314 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:13,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:13,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1583935150, now seen corresponding path program 1 times [2023-11-24 23:17:13,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:13,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075654271] [2023-11-24 23:17:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:13,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:13,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:13,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075654271] [2023-11-24 23:17:13,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075654271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:13,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:13,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:17:13,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853667888] [2023-11-24 23:17:13,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:13,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:17:13,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:13,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:17:13,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:13,368 INFO L87 Difference]: Start difference. First operand 27298 states and 106524 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:13,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:13,651 INFO L93 Difference]: Finished difference Result 26156 states and 102241 transitions. [2023-11-24 23:17:13,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:17:13,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-24 23:17:13,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:13,748 INFO L225 Difference]: With dead ends: 26156 [2023-11-24 23:17:13,748 INFO L226 Difference]: Without dead ends: 26156 [2023-11-24 23:17:13,748 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 [2023-11-24 23:17:13,749 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 131 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:13,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 88 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:17:13,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26156 states. [2023-11-24 23:17:14,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26156 to 26156. [2023-11-24 23:17:14,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26156 states, 26109 states have (on average 3.915929373013137) internal successors, (102241), 26155 states have internal predecessors, (102241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26156 states to 26156 states and 102241 transitions. [2023-11-24 23:17:14,873 INFO L78 Accepts]: Start accepts. Automaton has 26156 states and 102241 transitions. Word has length 11 [2023-11-24 23:17:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:14,873 INFO L495 AbstractCegarLoop]: Abstraction has 26156 states and 102241 transitions. [2023-11-24 23:17:14,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:14,873 INFO L276 IsEmpty]: Start isEmpty. Operand 26156 states and 102241 transitions. [2023-11-24 23:17:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:17:14,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:14,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:14,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 23:17:14,876 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:14,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:14,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1405127060, now seen corresponding path program 1 times [2023-11-24 23:17:14,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:14,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565834469] [2023-11-24 23:17:14,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:14,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:14,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:14,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565834469] [2023-11-24 23:17:14,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565834469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:14,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:14,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:17:14,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098482523] [2023-11-24 23:17:14,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:14,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:17:14,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:14,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:17:14,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:14,946 INFO L87 Difference]: Start difference. First operand 26156 states and 102241 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2023-11-24 23:17:15,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:15,389 INFO L93 Difference]: Finished difference Result 27282 states and 106452 transitions. [2023-11-24 23:17:15,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:17:15,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 [2023-11-24 23:17:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:15,487 INFO L225 Difference]: With dead ends: 27282 [2023-11-24 23:17:15,487 INFO L226 Difference]: Without dead ends: 27138 [2023-11-24 23:17:15,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:17:15,488 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 162 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:15,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 325 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:17:15,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27138 states. [2023-11-24 23:17:16,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27138 to 22418. [2023-11-24 23:17:16,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22418 states, 22395 states have (on average 3.924358115650815) internal successors, (87886), 22417 states have internal predecessors, (87886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:16,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22418 states to 22418 states and 87886 transitions. [2023-11-24 23:17:16,585 INFO L78 Accepts]: Start accepts. Automaton has 22418 states and 87886 transitions. Word has length 12 [2023-11-24 23:17:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:16,585 INFO L495 AbstractCegarLoop]: Abstraction has 22418 states and 87886 transitions. [2023-11-24 23:17:16,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2023-11-24 23:17:16,585 INFO L276 IsEmpty]: Start isEmpty. Operand 22418 states and 87886 transitions. [2023-11-24 23:17:16,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:17:16,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:16,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:16,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 23:17:16,589 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:16,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:16,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2006253482, now seen corresponding path program 1 times [2023-11-24 23:17:16,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:16,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324717334] [2023-11-24 23:17:16,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:16,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:16,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:16,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:16,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324717334] [2023-11-24 23:17:16,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324717334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:16,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:16,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:17:16,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328255348] [2023-11-24 23:17:16,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:16,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:17:16,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:16,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:17:16,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:16,649 INFO L87 Difference]: Start difference. First operand 22418 states and 87886 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2023-11-24 23:17:16,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:16,972 INFO L93 Difference]: Finished difference Result 21542 states and 84556 transitions. [2023-11-24 23:17:16,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:17:16,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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 [2023-11-24 23:17:16,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:17,064 INFO L225 Difference]: With dead ends: 21542 [2023-11-24 23:17:17,064 INFO L226 Difference]: Without dead ends: 21542 [2023-11-24 23:17:17,065 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 [2023-11-24 23:17:17,065 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 126 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:17,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 79 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:17:17,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21542 states. [2023-11-24 23:17:17,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21542 to 21542. [2023-11-24 23:17:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21542 states, 21523 states have (on average 3.928634484040329) internal successors, (84556), 21541 states have internal predecessors, (84556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21542 states to 21542 states and 84556 transitions. [2023-11-24 23:17:17,720 INFO L78 Accepts]: Start accepts. Automaton has 21542 states and 84556 transitions. Word has length 12 [2023-11-24 23:17:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:17,720 INFO L495 AbstractCegarLoop]: Abstraction has 21542 states and 84556 transitions. [2023-11-24 23:17:17,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2023-11-24 23:17:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 21542 states and 84556 transitions. [2023-11-24 23:17:17,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:17:17,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:17,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:17,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 23:17:17,724 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:17,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:17,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1857349092, now seen corresponding path program 1 times [2023-11-24 23:17:17,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:17,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012709780] [2023-11-24 23:17:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:17,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:17,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:17,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:17,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012709780] [2023-11-24 23:17:17,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012709780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:17,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:17,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:17:17,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012559181] [2023-11-24 23:17:17,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:17,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:17:17,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:17,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:17:17,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:17,819 INFO L87 Difference]: Start difference. First operand 21542 states and 84556 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) [2023-11-24 23:17:18,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:18,576 INFO L93 Difference]: Finished difference Result 20594 states and 80978 transitions. [2023-11-24 23:17:18,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:17:18,576 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 [2023-11-24 23:17:18,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:18,646 INFO L225 Difference]: With dead ends: 20594 [2023-11-24 23:17:18,647 INFO L226 Difference]: Without dead ends: 20594 [2023-11-24 23:17:18,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:17:18,652 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 177 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:18,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 128 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:17:18,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20594 states. [2023-11-24 23:17:19,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20594 to 20594. [2023-11-24 23:17:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20594 states, 20580 states have (on average 3.934791059280855) internal successors, (80978), 20593 states have internal predecessors, (80978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20594 states to 20594 states and 80978 transitions. [2023-11-24 23:17:19,105 INFO L78 Accepts]: Start accepts. Automaton has 20594 states and 80978 transitions. Word has length 12 [2023-11-24 23:17:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:19,105 INFO L495 AbstractCegarLoop]: Abstraction has 20594 states and 80978 transitions. [2023-11-24 23:17:19,105 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) [2023-11-24 23:17:19,106 INFO L276 IsEmpty]: Start isEmpty. Operand 20594 states and 80978 transitions. [2023-11-24 23:17:19,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:17:19,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:19,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:19,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 23:17:19,109 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:19,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:19,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1857350117, now seen corresponding path program 1 times [2023-11-24 23:17:19,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:19,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502329639] [2023-11-24 23:17:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:19,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:19,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:19,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502329639] [2023-11-24 23:17:19,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502329639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:19,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:19,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:17:19,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812822372] [2023-11-24 23:17:19,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:19,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:17:19,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:19,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:17:19,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:19,154 INFO L87 Difference]: Start difference. First operand 20594 states and 80978 transitions. Second operand has 4 states, 3 states have (on average 4.0) 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) [2023-11-24 23:17:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:19,452 INFO L93 Difference]: Finished difference Result 24386 states and 94228 transitions. [2023-11-24 23:17:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:17:19,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) 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 [2023-11-24 23:17:19,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:19,539 INFO L225 Difference]: With dead ends: 24386 [2023-11-24 23:17:19,539 INFO L226 Difference]: Without dead ends: 24386 [2023-11-24 23:17:19,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:19,540 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 106 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:19,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 131 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:17:19,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24386 states. [2023-11-24 23:17:20,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24386 to 20594. [2023-11-24 23:17:20,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20594 states, 20580 states have (on average 3.888726919339164) internal successors, (80030), 20593 states have internal predecessors, (80030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:20,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20594 states to 20594 states and 80030 transitions. [2023-11-24 23:17:20,381 INFO L78 Accepts]: Start accepts. Automaton has 20594 states and 80030 transitions. Word has length 12 [2023-11-24 23:17:20,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:20,381 INFO L495 AbstractCegarLoop]: Abstraction has 20594 states and 80030 transitions. [2023-11-24 23:17:20,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) 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) [2023-11-24 23:17:20,382 INFO L276 IsEmpty]: Start isEmpty. Operand 20594 states and 80030 transitions. [2023-11-24 23:17:20,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:17:20,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:20,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:20,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 23:17:20,385 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:20,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:20,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2064346829, now seen corresponding path program 1 times [2023-11-24 23:17:20,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:20,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041195676] [2023-11-24 23:17:20,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:20,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:20,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:20,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041195676] [2023-11-24 23:17:20,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041195676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:20,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:20,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:17:20,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323645980] [2023-11-24 23:17:20,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:20,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:17:20,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:20,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:17:20,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:20,450 INFO L87 Difference]: Start difference. First operand 20594 states and 80030 transitions. Second operand has 4 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) [2023-11-24 23:17:20,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:20,696 INFO L93 Difference]: Finished difference Result 19756 states and 76876 transitions. [2023-11-24 23:17:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:17:20,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 [2023-11-24 23:17:20,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:20,763 INFO L225 Difference]: With dead ends: 19756 [2023-11-24 23:17:20,763 INFO L226 Difference]: Without dead ends: 19756 [2023-11-24 23:17:20,763 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 [2023-11-24 23:17:20,764 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 121 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:20,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 76 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:17:20,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19756 states. [2023-11-24 23:17:21,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19756 to 19756. [2023-11-24 23:17:21,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19756 states, 19745 states have (on average 3.8934413775639403) internal successors, (76876), 19755 states have internal predecessors, (76876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:21,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19756 states to 19756 states and 76876 transitions. [2023-11-24 23:17:21,568 INFO L78 Accepts]: Start accepts. Automaton has 19756 states and 76876 transitions. Word has length 13 [2023-11-24 23:17:21,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:21,569 INFO L495 AbstractCegarLoop]: Abstraction has 19756 states and 76876 transitions. [2023-11-24 23:17:21,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:21,569 INFO L276 IsEmpty]: Start isEmpty. Operand 19756 states and 76876 transitions. [2023-11-24 23:17:21,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:17:21,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:21,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:21,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 23:17:21,573 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:21,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:21,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1743247729, now seen corresponding path program 1 times [2023-11-24 23:17:21,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:21,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465875828] [2023-11-24 23:17:21,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:21,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:21,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:21,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:21,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465875828] [2023-11-24 23:17:21,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465875828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:21,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:21,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:17:21,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555770104] [2023-11-24 23:17:21,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:21,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:17:21,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:21,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:17:21,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:17:21,686 INFO L87 Difference]: Start difference. First operand 19756 states and 76876 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2023-11-24 23:17:22,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:22,041 INFO L93 Difference]: Finished difference Result 19756 states and 76876 transitions. [2023-11-24 23:17:22,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:17:22,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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 [2023-11-24 23:17:22,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:22,101 INFO L225 Difference]: With dead ends: 19756 [2023-11-24 23:17:22,101 INFO L226 Difference]: Without dead ends: 18844 [2023-11-24 23:17:22,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:17:22,102 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 220 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:22,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 198 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:17:22,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18844 states. [2023-11-24 23:17:22,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18844 to 18048. [2023-11-24 23:17:22,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18048 states, 18041 states have (on average 3.8677456903719305) internal successors, (69778), 18047 states have internal predecessors, (69778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:22,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18048 states to 18048 states and 69778 transitions. [2023-11-24 23:17:22,502 INFO L78 Accepts]: Start accepts. Automaton has 18048 states and 69778 transitions. Word has length 13 [2023-11-24 23:17:22,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:22,502 INFO L495 AbstractCegarLoop]: Abstraction has 18048 states and 69778 transitions. [2023-11-24 23:17:22,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2023-11-24 23:17:22,503 INFO L276 IsEmpty]: Start isEmpty. Operand 18048 states and 69778 transitions. [2023-11-24 23:17:22,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:17:22,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:22,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:22,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 23:17:22,508 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:22,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:22,509 INFO L85 PathProgramCache]: Analyzing trace with hash 429757464, now seen corresponding path program 1 times [2023-11-24 23:17:22,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:22,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462315106] [2023-11-24 23:17:22,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:22,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:22,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:22,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462315106] [2023-11-24 23:17:22,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462315106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:22,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:22,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:17:22,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062091044] [2023-11-24 23:17:22,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:22,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:17:22,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:22,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:17:22,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:22,599 INFO L87 Difference]: Start difference. First operand 18048 states and 69778 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2023-11-24 23:17:22,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:22,907 INFO L93 Difference]: Finished difference Result 17248 states and 66762 transitions. [2023-11-24 23:17:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:17:22,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 [2023-11-24 23:17:22,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:22,976 INFO L225 Difference]: With dead ends: 17248 [2023-11-24 23:17:22,976 INFO L226 Difference]: Without dead ends: 17248 [2023-11-24 23:17:22,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:17:22,977 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 166 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:22,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 113 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:17:23,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17248 states. [2023-11-24 23:17:23,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17248 to 17248. [2023-11-24 23:17:23,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17248 states, 17243 states have (on average 3.871832047787508) internal successors, (66762), 17247 states have internal predecessors, (66762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:23,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17248 states to 17248 states and 66762 transitions. [2023-11-24 23:17:23,951 INFO L78 Accepts]: Start accepts. Automaton has 17248 states and 66762 transitions. Word has length 14 [2023-11-24 23:17:23,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:23,951 INFO L495 AbstractCegarLoop]: Abstraction has 17248 states and 66762 transitions. [2023-11-24 23:17:23,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2023-11-24 23:17:23,952 INFO L276 IsEmpty]: Start isEmpty. Operand 17248 states and 66762 transitions. [2023-11-24 23:17:23,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:17:23,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:23,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:23,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 23:17:23,958 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:23,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:23,959 INFO L85 PathProgramCache]: Analyzing trace with hash 429758489, now seen corresponding path program 1 times [2023-11-24 23:17:23,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:23,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716360411] [2023-11-24 23:17:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:23,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:24,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:24,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716360411] [2023-11-24 23:17:24,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716360411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:24,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:24,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:17:24,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886355929] [2023-11-24 23:17:24,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:24,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:17:24,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:24,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:17:24,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:24,015 INFO L87 Difference]: Start difference. First operand 17248 states and 66762 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2023-11-24 23:17:24,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:24,349 INFO L93 Difference]: Finished difference Result 20448 states and 77644 transitions. [2023-11-24 23:17:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:17:24,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 [2023-11-24 23:17:24,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:24,427 INFO L225 Difference]: With dead ends: 20448 [2023-11-24 23:17:24,427 INFO L226 Difference]: Without dead ends: 20448 [2023-11-24 23:17:24,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:24,428 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 100 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:24,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 116 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:17:24,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20448 states. [2023-11-24 23:17:24,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20448 to 17248. [2023-11-24 23:17:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17248 states, 17243 states have (on average 3.825436408977556) internal successors, (65962), 17247 states have internal predecessors, (65962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:24,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17248 states to 17248 states and 65962 transitions. [2023-11-24 23:17:24,962 INFO L78 Accepts]: Start accepts. Automaton has 17248 states and 65962 transitions. Word has length 14 [2023-11-24 23:17:24,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:24,963 INFO L495 AbstractCegarLoop]: Abstraction has 17248 states and 65962 transitions. [2023-11-24 23:17:24,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2023-11-24 23:17:24,963 INFO L276 IsEmpty]: Start isEmpty. Operand 17248 states and 65962 transitions. [2023-11-24 23:17:24,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:17:24,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:24,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:24,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-24 23:17:24,971 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:24,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:24,971 INFO L85 PathProgramCache]: Analyzing trace with hash -846577430, now seen corresponding path program 1 times [2023-11-24 23:17:24,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:24,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028010718] [2023-11-24 23:17:24,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:24,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:25,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:25,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028010718] [2023-11-24 23:17:25,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028010718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:25,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:25,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:17:25,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968054244] [2023-11-24 23:17:25,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:25,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:17:25,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:25,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:17:25,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:25,062 INFO L87 Difference]: Start difference. First operand 17248 states and 65962 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2023-11-24 23:17:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:25,608 INFO L93 Difference]: Finished difference Result 18650 states and 71020 transitions. [2023-11-24 23:17:25,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:17:25,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 [2023-11-24 23:17:25,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:25,660 INFO L225 Difference]: With dead ends: 18650 [2023-11-24 23:17:25,660 INFO L226 Difference]: Without dead ends: 17510 [2023-11-24 23:17:25,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:17:25,661 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 97 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:25,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 122 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:17:25,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17510 states. [2023-11-24 23:17:25,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17510 to 15236. [2023-11-24 23:17:25,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15236 states, 15232 states have (on average 3.8019957983193278) internal successors, (57912), 15235 states have internal predecessors, (57912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:25,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15236 states to 15236 states and 57912 transitions. [2023-11-24 23:17:25,993 INFO L78 Accepts]: Start accepts. Automaton has 15236 states and 57912 transitions. Word has length 14 [2023-11-24 23:17:25,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:25,993 INFO L495 AbstractCegarLoop]: Abstraction has 15236 states and 57912 transitions. [2023-11-24 23:17:25,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2023-11-24 23:17:25,994 INFO L276 IsEmpty]: Start isEmpty. Operand 15236 states and 57912 transitions. [2023-11-24 23:17:25,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:17:25,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:25,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:25,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-24 23:17:25,999 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:26,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:26,000 INFO L85 PathProgramCache]: Analyzing trace with hash 437580246, now seen corresponding path program 1 times [2023-11-24 23:17:26,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:26,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906731496] [2023-11-24 23:17:26,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:26,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:26,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:26,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906731496] [2023-11-24 23:17:26,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906731496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:26,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:26,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:17:26,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880130420] [2023-11-24 23:17:26,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:26,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:17:26,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:26,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:17:26,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:17:26,091 INFO L87 Difference]: Start difference. First operand 15236 states and 57912 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:26,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:26,452 INFO L93 Difference]: Finished difference Result 15236 states and 57912 transitions. [2023-11-24 23:17:26,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:17:26,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-11-24 23:17:26,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:26,476 INFO L225 Difference]: With dead ends: 15236 [2023-11-24 23:17:26,476 INFO L226 Difference]: Without dead ends: 9140 [2023-11-24 23:17:26,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:17:26,477 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 200 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:26,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 215 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:17:26,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9140 states. [2023-11-24 23:17:26,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9140 to 9140. [2023-11-24 23:17:26,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9140 states, 9138 states have (on average 3.651127161304443) internal successors, (33364), 9139 states have internal predecessors, (33364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9140 states to 9140 states and 33364 transitions. [2023-11-24 23:17:26,660 INFO L78 Accepts]: Start accepts. Automaton has 9140 states and 33364 transitions. Word has length 15 [2023-11-24 23:17:26,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:26,660 INFO L495 AbstractCegarLoop]: Abstraction has 9140 states and 33364 transitions. [2023-11-24 23:17:26,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:26,660 INFO L276 IsEmpty]: Start isEmpty. Operand 9140 states and 33364 transitions. [2023-11-24 23:17:26,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:17:26,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:26,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:26,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-24 23:17:26,665 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:17:26,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:26,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1627403582, now seen corresponding path program 1 times [2023-11-24 23:17:26,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:26,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339030202] [2023-11-24 23:17:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:26,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:26,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:26,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339030202] [2023-11-24 23:17:26,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339030202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:26,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:26,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:17:26,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914106481] [2023-11-24 23:17:26,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:26,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:17:26,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:26,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:17:26,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:26,761 INFO L87 Difference]: Start difference. First operand 9140 states and 33364 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:26,999 INFO L93 Difference]: Finished difference Result 6854 states and 24730 transitions. [2023-11-24 23:17:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:17:27,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-24 23:17:27,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:27,001 INFO L225 Difference]: With dead ends: 6854 [2023-11-24 23:17:27,001 INFO L226 Difference]: Without dead ends: 0 [2023-11-24 23:17:27,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:17:27,002 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 131 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:27,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 186 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:17:27,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-24 23:17:27,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-24 23:17:27,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:27,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-24 23:17:27,006 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2023-11-24 23:17:27,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:27,006 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-24 23:17:27,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:17:27,007 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-24 23:17:27,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 23:17:27,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2023-11-24 23:17:27,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2023-11-24 23:17:27,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2023-11-24 23:17:27,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2023-11-24 23:17:27,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2023-11-24 23:17:27,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2023-11-24 23:17:27,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2023-11-24 23:17:27,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2023-11-24 23:17:27,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2023-11-24 23:17:27,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2023-11-24 23:17:27,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2023-11-24 23:17:27,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2023-11-24 23:17:27,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2023-11-24 23:17:27,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2023-11-24 23:17:27,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2023-11-24 23:17:27,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2023-11-24 23:17:27,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2023-11-24 23:17:27,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2023-11-24 23:17:27,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2023-11-24 23:17:27,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2023-11-24 23:17:27,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2023-11-24 23:17:27,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2023-11-24 23:17:27,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2023-11-24 23:17:27,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2023-11-24 23:17:27,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2023-11-24 23:17:27,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2023-11-24 23:17:27,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2023-11-24 23:17:27,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2023-11-24 23:17:27,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2023-11-24 23:17:27,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2023-11-24 23:17:27,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2023-11-24 23:17:27,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2023-11-24 23:17:27,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2023-11-24 23:17:27,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2023-11-24 23:17:27,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2023-11-24 23:17:27,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2023-11-24 23:17:27,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2023-11-24 23:17:27,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2023-11-24 23:17:27,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2023-11-24 23:17:27,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-24 23:17:27,025 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:27,031 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 23:17:27,031 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:17:27,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:17:27 BasicIcfg [2023-11-24 23:17:27,035 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:17:27,036 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:17:27,036 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:17:27,036 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:17:27,037 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:49" (3/4) ... [2023-11-24 23:17:27,040 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 23:17:27,043 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-24 23:17:27,043 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-24 23:17:27,043 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-24 23:17:27,050 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 79 nodes and edges [2023-11-24 23:17:27,051 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-24 23:17:27,051 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-24 23:17:27,051 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 23:17:27,137 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/witness.graphml [2023-11-24 23:17:27,137 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/witness.yml [2023-11-24 23:17:27,137 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:17:27,138 INFO L158 Benchmark]: Toolchain (without parser) took 39401.47ms. Allocated memory was 136.3MB in the beginning and 14.4GB in the end (delta: 14.3GB). Free memory was 103.5MB in the beginning and 11.4GB in the end (delta: -11.3GB). Peak memory consumption was 3.0GB. Max. memory is 16.1GB. [2023-11-24 23:17:27,138 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 136.3MB. Free memory is still 109.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:17:27,139 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.69ms. Allocated memory is still 136.3MB. Free memory was 103.5MB in the beginning and 92.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 23:17:27,139 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.79ms. Allocated memory is still 136.3MB. Free memory was 92.0MB in the beginning and 89.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:17:27,140 INFO L158 Benchmark]: Boogie Preprocessor took 44.98ms. Allocated memory is still 136.3MB. Free memory was 89.5MB in the beginning and 87.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:17:27,140 INFO L158 Benchmark]: RCFGBuilder took 1171.95ms. Allocated memory is still 136.3MB. Free memory was 87.7MB in the beginning and 87.0MB in the end (delta: 640.6kB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2023-11-24 23:17:27,141 INFO L158 Benchmark]: TraceAbstraction took 37739.44ms. Allocated memory was 136.3MB in the beginning and 14.4GB in the end (delta: 14.3GB). Free memory was 86.3MB in the beginning and 11.4GB in the end (delta: -11.3GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2023-11-24 23:17:27,141 INFO L158 Benchmark]: Witness Printer took 101.61ms. Allocated memory is still 14.4GB. Free memory was 11.4GB in the beginning and 11.4GB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-24 23:17:27,143 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 136.3MB. Free memory is still 109.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.69ms. Allocated memory is still 136.3MB. Free memory was 103.5MB in the beginning and 92.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.79ms. Allocated memory is still 136.3MB. Free memory was 92.0MB in the beginning and 89.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.98ms. Allocated memory is still 136.3MB. Free memory was 89.5MB in the beginning and 87.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1171.95ms. Allocated memory is still 136.3MB. Free memory was 87.7MB in the beginning and 87.0MB in the end (delta: 640.6kB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. * TraceAbstraction took 37739.44ms. Allocated memory was 136.3MB in the beginning and 14.4GB in the end (delta: 14.3GB). Free memory was 86.3MB in the beginning and 11.4GB in the end (delta: -11.3GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. * Witness Printer took 101.61ms. Allocated memory is still 14.4GB. Free memory was 11.4GB in the beginning and 11.4GB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 149 locations, 39 error locations. Started 1 CEGAR loops. OverallTime: 37.5s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 14.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3084 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3084 mSDsluCounter, 3284 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1519 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3611 IncrementalHoareTripleChecker+Invalid, 3641 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 1765 mSDtfsCounter, 3611 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27564occurred in iteration=4, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 19.7s AutomataMinimizationTime, 21 MinimizatonAttempts, 36348 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 243 NumberOfCodeBlocks, 243 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 731 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 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 - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 23:17:27,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981d6575-bbc0-4d1e-8581-7ae5baba54f4/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE