./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18a88af0-0d25-4f79-9a24-e6deb4c9227e/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18a88af0-0d25-4f79-9a24-e6deb4c9227e/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_18a88af0-0d25-4f79-9a24-e6deb4c9227e/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18a88af0-0d25-4f79-9a24-e6deb4c9227e/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18a88af0-0d25-4f79-9a24-e6deb4c9227e/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_18a88af0-0d25-4f79-9a24-e6deb4c9227e/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 408d8d7e58240f749ab11087191b04ec647cfea8447827b0505b793eb68a9c0a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:20:38,371 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:20:38,512 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18a88af0-0d25-4f79-9a24-e6deb4c9227e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:20:38,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:20:38,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:20:38,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:20:38,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:20:38,585 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:20:38,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:20:38,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:20:38,593 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:20:38,594 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:20:38,594 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:20:38,597 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:20:38,597 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:20:38,598 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:20:38,598 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:20:38,599 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:20:38,599 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:20:38,600 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:20:38,601 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:20:38,601 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:20:38,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:20:38,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:20:38,604 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:20:38,604 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:20:38,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:20:38,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:20:38,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:20:38,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:20:38,608 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:20:38,609 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:20:38,609 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:20:38,609 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:20:38,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:20:38,610 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:20:38,610 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:20:38,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:20:38,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:20:38,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:38,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:20:38,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:20:38,612 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:20:38,613 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:20:38,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:20:38,614 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:20:38,614 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:20:38,614 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:20:38,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:20:38,615 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_18a88af0-0d25-4f79-9a24-e6deb4c9227e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18a88af0-0d25-4f79-9a24-e6deb4c9227e/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 408d8d7e58240f749ab11087191b04ec647cfea8447827b0505b793eb68a9c0a [2023-11-24 23:20:38,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:20:38,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:20:38,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:20:38,962 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:20:38,963 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:20:38,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18a88af0-0d25-4f79-9a24-e6deb4c9227e/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2023-11-24 23:20:42,344 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:20:42,628 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:20:42,629 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18a88af0-0d25-4f79-9a24-e6deb4c9227e/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2023-11-24 23:20:42,639 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18a88af0-0d25-4f79-9a24-e6deb4c9227e/bin/utaipan-verify-SwPr7d2a91/data/372897870/6383978dff3d4c2d93d7c6cdf7747b6d/FLAG6af6bbad1 [2023-11-24 23:20:42,656 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18a88af0-0d25-4f79-9a24-e6deb4c9227e/bin/utaipan-verify-SwPr7d2a91/data/372897870/6383978dff3d4c2d93d7c6cdf7747b6d [2023-11-24 23:20:42,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:20:42,661 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:20:42,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:42,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:20:42,671 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:20:42,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:42" (1/1) ... [2023-11-24 23:20:42,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@374ccf8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:42, skipping insertion in model container [2023-11-24 23:20:42,674 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:42" (1/1) ... [2023-11-24 23:20:42,707 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:20:42,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:42,947 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:20:42,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:43,019 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:20:43,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:43 WrapperNode [2023-11-24 23:20:43,020 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:43,021 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:43,021 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:20:43,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:20:43,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:43" (1/1) ... [2023-11-24 23:20:43,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:43" (1/1) ... [2023-11-24 23:20:43,086 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 248 [2023-11-24 23:20:43,087 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:43,088 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:20:43,088 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:20:43,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:20:43,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:43" (1/1) ... [2023-11-24 23:20:43,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:43" (1/1) ... [2023-11-24 23:20:43,104 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:43" (1/1) ... [2023-11-24 23:20:43,104 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:43" (1/1) ... [2023-11-24 23:20:43,115 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:43" (1/1) ... [2023-11-24 23:20:43,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:43" (1/1) ... [2023-11-24 23:20:43,122 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:43" (1/1) ... [2023-11-24 23:20:43,125 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:43" (1/1) ... [2023-11-24 23:20:43,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:20:43,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:20:43,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:20:43,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:20:43,133 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:43" (1/1) ... [2023-11-24 23:20:43,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:43,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18a88af0-0d25-4f79-9a24-e6deb4c9227e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:43,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18a88af0-0d25-4f79-9a24-e6deb4c9227e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:20:43,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18a88af0-0d25-4f79-9a24-e6deb4c9227e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:20:43,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:20:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 23:20:43,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 23:20:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 23:20:43,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 23:20:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 23:20:43,239 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 23:20:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:20:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:20:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:20:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:20:43,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:20:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:20:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:20:43,242 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 23:20:43,386 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:20:43,388 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:20:43,928 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:20:44,423 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:20:44,424 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:20:44,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:44 BoogieIcfgContainer [2023-11-24 23:20:44,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:20:44,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:20:44,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:20:44,439 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:20:44,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:20:42" (1/3) ... [2023-11-24 23:20:44,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d88d2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:20:44, skipping insertion in model container [2023-11-24 23:20:44,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:43" (2/3) ... [2023-11-24 23:20:44,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d88d2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:20:44, skipping insertion in model container [2023-11-24 23:20:44,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:44" (3/3) ... [2023-11-24 23:20:44,449 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2023-11-24 23:20:44,462 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 23:20:44,476 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:20:44,477 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-24 23:20:44,477 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 23:20:44,613 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 23:20:44,655 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 101 places, 109 transitions, 239 flow [2023-11-24 23:20:46,750 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 37652 states, 37310 states have (on average 4.04612704368802) internal successors, (150961), 37651 states have internal predecessors, (150961), 0 states have call successors, (0), 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 23:20:46,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:20:46,782 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;@1b60ab0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:20:46,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-24 23:20:46,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 37652 states, 37310 states have (on average 4.04612704368802) internal successors, (150961), 37651 states have internal predecessors, (150961), 0 states have call successors, (0), 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 23:20:46,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:20:46,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:46,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:46,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:20:47,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:47,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1161190638, now seen corresponding path program 1 times [2023-11-24 23:20:47,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:47,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13929485] [2023-11-24 23:20:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:47,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:47,539 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 23:20:47,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:47,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13929485] [2023-11-24 23:20:47,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13929485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:47,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:47,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:20:47,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979676805] [2023-11-24 23:20:47,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:47,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:20:47,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:47,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:20:47,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:20:47,676 INFO L87 Difference]: Start difference. First operand has 37652 states, 37310 states have (on average 4.04612704368802) internal successors, (150961), 37651 states have internal predecessors, (150961), 0 states have call successors, (0), 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 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 23:20:49,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:49,498 INFO L93 Difference]: Finished difference Result 48900 states and 195693 transitions. [2023-11-24 23:20:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:20:49,501 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 23:20:49,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:50,407 INFO L225 Difference]: With dead ends: 48900 [2023-11-24 23:20:50,407 INFO L226 Difference]: Without dead ends: 48900 [2023-11-24 23:20:50,409 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 23:20:50,414 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 157 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:50,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 226 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:20:50,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48900 states. [2023-11-24 23:20:53,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48900 to 41870. [2023-11-24 23:20:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41870 states, 41577 states have (on average 4.0559203405729125) internal successors, (168633), 41869 states have internal predecessors, (168633), 0 states have call successors, (0), 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 23:20:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41870 states to 41870 states and 168633 transitions. [2023-11-24 23:20:54,166 INFO L78 Accepts]: Start accepts. Automaton has 41870 states and 168633 transitions. Word has length 9 [2023-11-24 23:20:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:54,166 INFO L495 AbstractCegarLoop]: Abstraction has 41870 states and 168633 transitions. [2023-11-24 23:20:54,167 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 23:20:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 41870 states and 168633 transitions. [2023-11-24 23:20:54,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:20:54,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:54,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:54,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:20:54,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:20:54,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:54,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1637170611, now seen corresponding path program 1 times [2023-11-24 23:20:54,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:54,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377864469] [2023-11-24 23:20:54,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:54,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:54,277 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 23:20:54,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:54,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377864469] [2023-11-24 23:20:54,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377864469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:54,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:54,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:20:54,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050417347] [2023-11-24 23:20:54,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:54,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:20:54,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:54,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:20:54,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:20:54,281 INFO L87 Difference]: Start difference. First operand 41870 states and 168633 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 23:20:55,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:55,542 INFO L93 Difference]: Finished difference Result 40464 states and 163211 transitions. [2023-11-24 23:20:55,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:20:55,545 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 23:20:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:56,102 INFO L225 Difference]: With dead ends: 40464 [2023-11-24 23:20:56,103 INFO L226 Difference]: Without dead ends: 40464 [2023-11-24 23:20:56,104 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 23:20:56,105 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 176 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:56,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 138 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:20:56,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40464 states. [2023-11-24 23:20:58,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40464 to 40464. [2023-11-24 23:20:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40464 states, 40220 states have (on average 4.057956240676281) internal successors, (163211), 40463 states have internal predecessors, (163211), 0 states have call successors, (0), 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 23:20:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40464 states to 40464 states and 163211 transitions. [2023-11-24 23:20:58,403 INFO L78 Accepts]: Start accepts. Automaton has 40464 states and 163211 transitions. Word has length 10 [2023-11-24 23:20:58,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:58,404 INFO L495 AbstractCegarLoop]: Abstraction has 40464 states and 163211 transitions. [2023-11-24 23:20:58,405 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 23:20:58,405 INFO L276 IsEmpty]: Start isEmpty. Operand 40464 states and 163211 transitions. [2023-11-24 23:20:58,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:20:58,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:58,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:58,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:20:58,413 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:20:58,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:58,414 INFO L85 PathProgramCache]: Analyzing trace with hash 787287638, now seen corresponding path program 1 times [2023-11-24 23:20:58,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:58,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150843192] [2023-11-24 23:20:58,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:58,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:58,530 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 23:20:58,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:58,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150843192] [2023-11-24 23:20:58,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150843192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:58,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:58,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:20:58,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832566811] [2023-11-24 23:20:58,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:58,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:20:58,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:58,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:20:58,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:20:58,535 INFO L87 Difference]: Start difference. First operand 40464 states and 163211 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 23:20:59,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:59,776 INFO L93 Difference]: Finished difference Result 39058 states and 157789 transitions. [2023-11-24 23:20:59,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:20:59,777 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 23:20:59,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:00,029 INFO L225 Difference]: With dead ends: 39058 [2023-11-24 23:21:00,029 INFO L226 Difference]: Without dead ends: 39058 [2023-11-24 23:21:00,030 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 23:21:00,032 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 173 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:00,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 138 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:21:00,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39058 states. [2023-11-24 23:21:01,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39058 to 39058. [2023-11-24 23:21:01,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39058 states, 38863 states have (on average 4.060134317988832) internal successors, (157789), 39057 states have internal predecessors, (157789), 0 states have call successors, (0), 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 23:21:02,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39058 states to 39058 states and 157789 transitions. [2023-11-24 23:21:02,582 INFO L78 Accepts]: Start accepts. Automaton has 39058 states and 157789 transitions. Word has length 11 [2023-11-24 23:21:02,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:02,583 INFO L495 AbstractCegarLoop]: Abstraction has 39058 states and 157789 transitions. [2023-11-24 23:21:02,584 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 23:21:02,584 INFO L276 IsEmpty]: Start isEmpty. Operand 39058 states and 157789 transitions. [2023-11-24 23:21:02,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:21:02,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:02,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:21:02,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:21:02,589 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:21:02,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:02,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1914725680, now seen corresponding path program 1 times [2023-11-24 23:21:02,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:02,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227627574] [2023-11-24 23:21:02,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:02,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:02,727 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 23:21:02,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:02,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227627574] [2023-11-24 23:21:02,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227627574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:02,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:21:02,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:21:02,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990449778] [2023-11-24 23:21:02,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:02,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:21:02,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:02,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:21:02,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:21:02,732 INFO L87 Difference]: Start difference. First operand 39058 states and 157789 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 23:21:03,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:03,579 INFO L93 Difference]: Finished difference Result 51138 states and 205927 transitions. [2023-11-24 23:21:03,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:21:03,579 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 23:21:03,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:03,899 INFO L225 Difference]: With dead ends: 51138 [2023-11-24 23:21:03,899 INFO L226 Difference]: Without dead ends: 51138 [2023-11-24 23:21:03,900 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 23:21:03,902 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 140 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:03,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 257 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:21:04,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51138 states. [2023-11-24 23:21:05,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51138 to 43588. [2023-11-24 23:21:05,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43588 states, 43421 states have (on average 4.071923723543907) internal successors, (176807), 43587 states have internal predecessors, (176807), 0 states have call successors, (0), 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 23:21:06,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43588 states to 43588 states and 176807 transitions. [2023-11-24 23:21:06,546 INFO L78 Accepts]: Start accepts. Automaton has 43588 states and 176807 transitions. Word has length 11 [2023-11-24 23:21:06,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:06,547 INFO L495 AbstractCegarLoop]: Abstraction has 43588 states and 176807 transitions. [2023-11-24 23:21:06,547 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 23:21:06,547 INFO L276 IsEmpty]: Start isEmpty. Operand 43588 states and 176807 transitions. [2023-11-24 23:21:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:21:06,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:06,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:21:06,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:21:06,552 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:21:06,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:06,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1363887217, now seen corresponding path program 1 times [2023-11-24 23:21:06,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:06,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375275785] [2023-11-24 23:21:06,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:06,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:06,648 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 23:21:06,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375275785] [2023-11-24 23:21:06,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375275785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:06,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:21:06,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:21:06,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092073103] [2023-11-24 23:21:06,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:06,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:21:06,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:06,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:21:06,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:21:06,653 INFO L87 Difference]: Start difference. First operand 43588 states and 176807 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 23:21:07,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:07,235 INFO L93 Difference]: Finished difference Result 42020 states and 170737 transitions. [2023-11-24 23:21:07,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:21:07,236 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 23:21:07,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:07,473 INFO L225 Difference]: With dead ends: 42020 [2023-11-24 23:21:07,473 INFO L226 Difference]: Without dead ends: 42020 [2023-11-24 23:21:07,473 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 23:21:07,474 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 240 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:07,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 211 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:21:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42020 states. [2023-11-24 23:21:09,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42020 to 42020. [2023-11-24 23:21:09,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42020 states, 41895 states have (on average 4.075355054302423) internal successors, (170737), 42019 states have internal predecessors, (170737), 0 states have call successors, (0), 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 23:21:09,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42020 states to 42020 states and 170737 transitions. [2023-11-24 23:21:09,935 INFO L78 Accepts]: Start accepts. Automaton has 42020 states and 170737 transitions. Word has length 12 [2023-11-24 23:21:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:09,935 INFO L495 AbstractCegarLoop]: Abstraction has 42020 states and 170737 transitions. [2023-11-24 23:21:09,935 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 23:21:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 42020 states and 170737 transitions. [2023-11-24 23:21:09,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:21:09,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:09,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:21:09,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:21:09,946 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:21:09,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:09,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1363886192, now seen corresponding path program 1 times [2023-11-24 23:21:09,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:09,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054292806] [2023-11-24 23:21:09,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:09,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:10,140 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 23:21:10,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:10,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054292806] [2023-11-24 23:21:10,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054292806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:10,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:21:10,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:21:10,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790346746] [2023-11-24 23:21:10,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:10,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:21:10,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:10,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:21:10,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:21:10,143 INFO L87 Difference]: Start difference. First operand 42020 states and 170737 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 23:21:10,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:10,933 INFO L93 Difference]: Finished difference Result 48292 states and 193399 transitions. [2023-11-24 23:21:10,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:21:10,933 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 23:21:10,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:11,251 INFO L225 Difference]: With dead ends: 48292 [2023-11-24 23:21:11,252 INFO L226 Difference]: Without dead ends: 48292 [2023-11-24 23:21:11,252 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 23:21:11,253 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 139 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:11,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 262 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:21:11,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48292 states. [2023-11-24 23:21:12,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48292 to 42020. [2023-11-24 23:21:13,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42020 states, 41895 states have (on average 4.037928153717627) internal successors, (169169), 42019 states have internal predecessors, (169169), 0 states have call successors, (0), 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 23:21:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42020 states to 42020 states and 169169 transitions. [2023-11-24 23:21:13,237 INFO L78 Accepts]: Start accepts. Automaton has 42020 states and 169169 transitions. Word has length 12 [2023-11-24 23:21:13,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:13,237 INFO L495 AbstractCegarLoop]: Abstraction has 42020 states and 169169 transitions. [2023-11-24 23:21:13,238 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 23:21:13,238 INFO L276 IsEmpty]: Start isEmpty. Operand 42020 states and 169169 transitions. [2023-11-24 23:21:13,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:21:13,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:13,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:21:13,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 23:21:13,242 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:21:13,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:13,242 INFO L85 PathProgramCache]: Analyzing trace with hash 773046894, now seen corresponding path program 1 times [2023-11-24 23:21:13,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:13,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428509945] [2023-11-24 23:21:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:13,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:13,337 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 23:21:13,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:13,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428509945] [2023-11-24 23:21:13,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428509945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:13,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:21:13,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:21:13,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312733786] [2023-11-24 23:21:13,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:13,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:21:13,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:13,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:21:13,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:21:13,341 INFO L87 Difference]: Start difference. First operand 42020 states and 169169 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 23:21:13,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:13,879 INFO L93 Difference]: Finished difference Result 40564 states and 163585 transitions. [2023-11-24 23:21:13,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:21:13,880 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 23:21:13,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:14,971 INFO L225 Difference]: With dead ends: 40564 [2023-11-24 23:21:14,971 INFO L226 Difference]: Without dead ends: 40564 [2023-11-24 23:21:14,972 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 23:21:14,979 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 166 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:14,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 126 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:21:15,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40564 states. [2023-11-24 23:21:15,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40564 to 40564. [2023-11-24 23:21:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40564 states, 40460 states have (on average 4.043129016312407) internal successors, (163585), 40563 states have internal predecessors, (163585), 0 states have call successors, (0), 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 23:21:16,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40564 states to 40564 states and 163585 transitions. [2023-11-24 23:21:16,824 INFO L78 Accepts]: Start accepts. Automaton has 40564 states and 163585 transitions. Word has length 12 [2023-11-24 23:21:16,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:16,824 INFO L495 AbstractCegarLoop]: Abstraction has 40564 states and 163585 transitions. [2023-11-24 23:21:16,824 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 23:21:16,824 INFO L276 IsEmpty]: Start isEmpty. Operand 40564 states and 163585 transitions. [2023-11-24 23:21:16,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:21:16,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:16,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:21:16,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 23:21:16,830 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:21:16,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:16,831 INFO L85 PathProgramCache]: Analyzing trace with hash 669170041, now seen corresponding path program 1 times [2023-11-24 23:21:16,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:16,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688032789] [2023-11-24 23:21:16,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:16,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:16,947 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 23:21:16,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:16,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688032789] [2023-11-24 23:21:16,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688032789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:16,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:21:16,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:21:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971670965] [2023-11-24 23:21:16,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:16,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:21:16,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:16,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:21:16,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:21:16,950 INFO L87 Difference]: Start difference. First operand 40564 states and 163585 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 23:21:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:17,545 INFO L93 Difference]: Finished difference Result 40564 states and 163585 transitions. [2023-11-24 23:21:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:21:17,546 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 23:21:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:17,833 INFO L225 Difference]: With dead ends: 40564 [2023-11-24 23:21:17,834 INFO L226 Difference]: Without dead ends: 40164 [2023-11-24 23:21:17,834 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 23:21:17,835 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 302 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:17,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 330 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:21:17,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40164 states. [2023-11-24 23:21:19,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40164 to 38700. [2023-11-24 23:21:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38700 states, 38631 states have (on average 4.033755274261603) internal successors, (155828), 38699 states have internal predecessors, (155828), 0 states have call successors, (0), 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 23:21:19,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38700 states to 38700 states and 155828 transitions. [2023-11-24 23:21:19,691 INFO L78 Accepts]: Start accepts. Automaton has 38700 states and 155828 transitions. Word has length 13 [2023-11-24 23:21:19,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:19,691 INFO L495 AbstractCegarLoop]: Abstraction has 38700 states and 155828 transitions. [2023-11-24 23:21:19,691 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 23:21:19,692 INFO L276 IsEmpty]: Start isEmpty. Operand 38700 states and 155828 transitions. [2023-11-24 23:21:19,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:21:19,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:19,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:21:19,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 23:21:19,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:21:19,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:19,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1530365447, now seen corresponding path program 1 times [2023-11-24 23:21:19,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:19,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332962999] [2023-11-24 23:21:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:19,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:19,774 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 23:21:19,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:19,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332962999] [2023-11-24 23:21:19,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332962999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:19,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:21:19,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:21:19,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822408146] [2023-11-24 23:21:19,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:19,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:21:19,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:19,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:21:19,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:21:19,777 INFO L87 Difference]: Start difference. First operand 38700 states and 155828 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 23:21:20,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:20,523 INFO L93 Difference]: Finished difference Result 50364 states and 202466 transitions. [2023-11-24 23:21:20,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:21:20,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 23:21:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:21,730 INFO L225 Difference]: With dead ends: 50364 [2023-11-24 23:21:21,731 INFO L226 Difference]: Without dead ends: 50364 [2023-11-24 23:21:21,731 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 23:21:21,732 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 132 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:21,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 233 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:21:21,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50364 states. [2023-11-24 23:21:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50364 to 43074. [2023-11-24 23:21:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43074 states, 43015 states have (on average 4.051563408113449) internal successors, (174278), 43073 states have internal predecessors, (174278), 0 states have call successors, (0), 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 23:21:23,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43074 states to 43074 states and 174278 transitions. [2023-11-24 23:21:23,709 INFO L78 Accepts]: Start accepts. Automaton has 43074 states and 174278 transitions. Word has length 13 [2023-11-24 23:21:23,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:23,709 INFO L495 AbstractCegarLoop]: Abstraction has 43074 states and 174278 transitions. [2023-11-24 23:21:23,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 23:21:23,710 INFO L276 IsEmpty]: Start isEmpty. Operand 43074 states and 174278 transitions. [2023-11-24 23:21:23,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:21:23,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:23,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:21:23,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 23:21:23,717 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:21:23,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:23,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1805381004, now seen corresponding path program 1 times [2023-11-24 23:21:23,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:23,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650649852] [2023-11-24 23:21:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:23,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:23,788 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 23:21:23,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:23,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650649852] [2023-11-24 23:21:23,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650649852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:23,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:21:23,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:21:23,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109211677] [2023-11-24 23:21:23,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:23,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:21:23,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:23,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:21:23,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:21:23,791 INFO L87 Difference]: Start difference. First operand 43074 states and 174278 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 23:21:24,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:24,185 INFO L93 Difference]: Finished difference Result 41516 states and 168267 transitions. [2023-11-24 23:21:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:21:24,186 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 23:21:24,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:24,406 INFO L225 Difference]: With dead ends: 41516 [2023-11-24 23:21:24,406 INFO L226 Difference]: Without dead ends: 41516 [2023-11-24 23:21:24,406 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 23:21:24,407 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 159 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:24,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 120 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:21:24,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41516 states. [2023-11-24 23:21:25,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41516 to 41516. [2023-11-24 23:21:25,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41516 states, 41469 states have (on average 4.057657527309557) internal successors, (168267), 41515 states have internal predecessors, (168267), 0 states have call successors, (0), 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 23:21:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41516 states to 41516 states and 168267 transitions. [2023-11-24 23:21:26,051 INFO L78 Accepts]: Start accepts. Automaton has 41516 states and 168267 transitions. Word has length 13 [2023-11-24 23:21:26,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:26,052 INFO L495 AbstractCegarLoop]: Abstraction has 41516 states and 168267 transitions. [2023-11-24 23:21:26,052 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 23:21:26,052 INFO L276 IsEmpty]: Start isEmpty. Operand 41516 states and 168267 transitions. [2023-11-24 23:21:26,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:21:26,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:26,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:21:26,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 23:21:26,059 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-24 23:21:26,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:26,060 INFO L85 PathProgramCache]: Analyzing trace with hash 216752693, now seen corresponding path program 1 times [2023-11-24 23:21:26,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:26,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32307166] [2023-11-24 23:21:26,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:26,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:26,118 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 23:21:26,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:26,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32307166] [2023-11-24 23:21:26,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32307166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:26,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:21:26,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:21:26,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179488340] [2023-11-24 23:21:26,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:26,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:21:26,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:26,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:21:26,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:21:26,120 INFO L87 Difference]: Start difference. First operand 41516 states and 168267 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)