./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:21:07,524 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:21:07,660 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:21:07,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:21:07,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:21:07,724 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:21:07,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:21:07,725 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:21:07,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:21:07,734 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:21:07,734 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:21:07,735 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:21:07,735 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:21:07,737 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:21:07,738 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:21:07,738 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:21:07,739 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:21:07,739 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:21:07,740 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:21:07,740 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:21:07,741 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:21:07,741 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:21:07,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:21:07,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:21:07,743 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:21:07,744 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:21:07,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:21:07,745 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:21:07,745 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:21:07,746 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:21:07,747 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:21:07,747 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:21:07,748 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:21:07,748 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:21:07,748 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:21:07,748 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:21:07,749 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:21:07,749 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:21:07,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:07,750 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:21:07,750 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:21:07,750 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:21:07,751 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:21:07,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:21:07,752 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:21:07,752 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:21:07,752 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:21:07,752 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_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd [2023-11-19 05:21:08,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:21:08,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:21:08,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:21:08,095 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:21:08,096 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:21:08,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2023-11-19 05:21:11,442 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:21:11,779 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:21:11,780 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2023-11-19 05:21:11,799 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/bin/utaipan-verify-t7M7D8N6sZ/data/459ab4d4c/f1cd660d99444ba89acf8ac7b8abb50c/FLAG10a462b72 [2023-11-19 05:21:11,815 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/bin/utaipan-verify-t7M7D8N6sZ/data/459ab4d4c/f1cd660d99444ba89acf8ac7b8abb50c [2023-11-19 05:21:11,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:21:11,820 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:21:11,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:11,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:21:11,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:21:11,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:11" (1/1) ... [2023-11-19 05:21:11,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cac9ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:11, skipping insertion in model container [2023-11-19 05:21:11,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:11" (1/1) ... [2023-11-19 05:21:11,911 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:21:12,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:12,320 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:21:12,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:12,411 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:21:12,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:12 WrapperNode [2023-11-19 05:21:12,411 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:12,412 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:21:12,412 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:21:12,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:21:12,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:12" (1/1) ... [2023-11-19 05:21:12,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:12" (1/1) ... [2023-11-19 05:21:12,490 INFO L138 Inliner]: procedures = 172, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 136 [2023-11-19 05:21:12,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:21:12,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:21:12,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:21:12,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:21:12,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:12" (1/1) ... [2023-11-19 05:21:12,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:12" (1/1) ... [2023-11-19 05:21:12,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:12" (1/1) ... [2023-11-19 05:21:12,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:12" (1/1) ... [2023-11-19 05:21:12,514 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:12" (1/1) ... [2023-11-19 05:21:12,519 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:12" (1/1) ... [2023-11-19 05:21:12,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:12" (1/1) ... [2023-11-19 05:21:12,525 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:12" (1/1) ... [2023-11-19 05:21:12,546 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:21:12,547 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:21:12,547 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:21:12,547 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:21:12,548 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:12" (1/1) ... [2023-11-19 05:21:12,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:12,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:12,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:21:12,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67fb3a2-a1f0-4c93-9adf-ceddea0dccd7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:21:12,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:21:12,637 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-19 05:21:12,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-19 05:21:12,637 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 05:21:12,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 05:21:12,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:21:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:21:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:21:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:21:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:21:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:21:12,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:21:12,641 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:21:12,788 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:21:12,790 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:21:13,087 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:21:13,334 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:21:13,334 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:21:13,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:13 BoogieIcfgContainer [2023-11-19 05:21:13,342 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:21:13,346 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:21:13,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:21:13,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:21:13,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:21:11" (1/3) ... [2023-11-19 05:21:13,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d9afbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:13, skipping insertion in model container [2023-11-19 05:21:13,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:12" (2/3) ... [2023-11-19 05:21:13,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d9afbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:13, skipping insertion in model container [2023-11-19 05:21:13,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:13" (3/3) ... [2023-11-19 05:21:13,358 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2023-11-19 05:21:13,370 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 05:21:13,382 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:21:13,382 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 05:21:13,383 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:21:13,496 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:21:13,535 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:21:13,552 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 96 transitions, 200 flow [2023-11-19 05:21:13,556 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 96 transitions, 200 flow [2023-11-19 05:21:13,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 200 flow [2023-11-19 05:21:13,618 INFO L124 PetriNetUnfolderBase]: 7/106 cut-off events. [2023-11-19 05:21:13,618 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 05:21:13,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 106 events. 7/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-11-19 05:21:13,632 INFO L119 LiptonReduction]: Number of co-enabled transitions 3244 [2023-11-19 05:21:16,912 INFO L134 LiptonReduction]: Checked pairs total: 6559 [2023-11-19 05:21:16,912 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-11-19 05:21:16,921 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 32 transitions, 72 flow [2023-11-19 05:21:16,980 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 427 states, 409 states have (on average 3.0733496332518335) internal successors, (1257), 426 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:17,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:21:17,021 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;@37b65861, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:21:17,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-19 05:21:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand has 427 states, 409 states have (on average 3.0733496332518335) internal successors, (1257), 426 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:21:17,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:17,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:21:17,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 05:21:17,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:17,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1071621101, now seen corresponding path program 1 times [2023-11-19 05:21:17,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:17,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61698190] [2023-11-19 05:21:17,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:17,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:17,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:17,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:17,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61698190] [2023-11-19 05:21:17,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61698190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:17,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:17,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:21:17,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43504865] [2023-11-19 05:21:17,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:17,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:21:17,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:17,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:21:17,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:21:17,342 INFO L87 Difference]: Start difference. First operand has 427 states, 409 states have (on average 3.0733496332518335) internal successors, (1257), 426 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 6.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:17,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:17,440 INFO L93 Difference]: Finished difference Result 254 states and 686 transitions. [2023-11-19 05:21:17,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:21:17,444 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 6.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:21:17,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:17,470 INFO L225 Difference]: With dead ends: 254 [2023-11-19 05:21:17,470 INFO L226 Difference]: Without dead ends: 254 [2023-11-19 05:21:17,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:21:17,479 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:17,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:21:17,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-19 05:21:17,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2023-11-19 05:21:17,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 254 states have (on average 2.7007874015748032) internal successors, (686), 253 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:17,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 686 transitions. [2023-11-19 05:21:17,571 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 686 transitions. Word has length 6 [2023-11-19 05:21:17,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:17,572 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 686 transitions. [2023-11-19 05:21:17,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 6.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:17,572 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 686 transitions. [2023-11-19 05:21:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:21:17,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:17,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:21:17,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:21:17,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 05:21:17,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:17,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1071621092, now seen corresponding path program 1 times [2023-11-19 05:21:17,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:17,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513658252] [2023-11-19 05:21:17,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:17,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:17,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:17,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513658252] [2023-11-19 05:21:17,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513658252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:17,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:17,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:21:17,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247319341] [2023-11-19 05:21:17,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:17,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:21:17,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:17,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:21:17,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:17,780 INFO L87 Difference]: Start difference. First operand 254 states and 686 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:17,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:17,845 INFO L93 Difference]: Finished difference Result 238 states and 626 transitions. [2023-11-19 05:21:17,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:21:17,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:21:17,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:17,849 INFO L225 Difference]: With dead ends: 238 [2023-11-19 05:21:17,849 INFO L226 Difference]: Without dead ends: 238 [2023-11-19 05:21:17,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:17,851 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:17,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:21:17,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-19 05:21:17,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 222. [2023-11-19 05:21:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 222 states have (on average 2.6936936936936937) internal successors, (598), 221 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:17,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 598 transitions. [2023-11-19 05:21:17,870 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 598 transitions. Word has length 6 [2023-11-19 05:21:17,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:17,870 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 598 transitions. [2023-11-19 05:21:17,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:17,871 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 598 transitions. [2023-11-19 05:21:17,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:21:17,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:17,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:17,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:21:17,872 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 05:21:17,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:17,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1139484319, now seen corresponding path program 1 times [2023-11-19 05:21:17,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:17,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842345468] [2023-11-19 05:21:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:17,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:18,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:18,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842345468] [2023-11-19 05:21:18,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842345468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:18,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:18,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:21:18,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455673305] [2023-11-19 05:21:18,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:18,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:21:18,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:18,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:21:18,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:21:18,044 INFO L87 Difference]: Start difference. First operand 222 states and 598 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:18,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:18,198 INFO L93 Difference]: Finished difference Result 222 states and 582 transitions. [2023-11-19 05:21:18,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:21:18,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 05:21:18,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:18,203 INFO L225 Difference]: With dead ends: 222 [2023-11-19 05:21:18,203 INFO L226 Difference]: Without dead ends: 222 [2023-11-19 05:21:18,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:18,209 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:18,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 8 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:21:18,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-19 05:21:18,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 206. [2023-11-19 05:21:18,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 206 states have (on average 2.6893203883495147) internal successors, (554), 205 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 554 transitions. [2023-11-19 05:21:18,247 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 554 transitions. Word has length 7 [2023-11-19 05:21:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:18,248 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 554 transitions. [2023-11-19 05:21:18,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:18,248 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 554 transitions. [2023-11-19 05:21:18,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:21:18,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:18,249 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:18,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:21:18,250 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 05:21:18,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:18,251 INFO L85 PathProgramCache]: Analyzing trace with hash -964339168, now seen corresponding path program 1 times [2023-11-19 05:21:18,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:18,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796910563] [2023-11-19 05:21:18,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:18,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:21:18,294 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:21:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:21:18,340 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:21:18,341 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:21:18,342 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-19 05:21:18,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-11-19 05:21:18,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-19 05:21:18,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-19 05:21:18,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-19 05:21:18,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-19 05:21:18,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-19 05:21:18,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-19 05:21:18,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-11-19 05:21:18,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-11-19 05:21:18,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-19 05:21:18,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-19 05:21:18,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-19 05:21:18,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-19 05:21:18,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-19 05:21:18,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-19 05:21:18,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-19 05:21:18,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-19 05:21:18,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:21:18,360 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 05:21:18,362 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 05:21:18,363 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 05:21:18,431 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:21:18,445 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:21:18,446 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 158 transitions, 336 flow [2023-11-19 05:21:18,446 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 158 transitions, 336 flow [2023-11-19 05:21:18,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 158 transitions, 336 flow [2023-11-19 05:21:18,541 INFO L124 PetriNetUnfolderBase]: 9/163 cut-off events. [2023-11-19 05:21:18,542 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 05:21:18,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 163 events. 9/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 347 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 170. Up to 6 conditions per place. [2023-11-19 05:21:18,560 INFO L119 LiptonReduction]: Number of co-enabled transitions 9728 [2023-11-19 05:21:21,823 INFO L134 LiptonReduction]: Checked pairs total: 24858 [2023-11-19 05:21:21,825 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-11-19 05:21:21,830 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 69 places, 64 transitions, 148 flow [2023-11-19 05:21:22,581 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 13747 states, 13575 states have (on average 4.047587476979742) internal successors, (54946), 13746 states have internal predecessors, (54946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:22,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:21:22,591 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;@37b65861, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:21:22,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-19 05:21:22,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 13747 states, 13575 states have (on average 4.047587476979742) internal successors, (54946), 13746 states have internal predecessors, (54946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:22,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:21:22,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:22,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:22,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:21:22,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:22,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1109080809, now seen corresponding path program 1 times [2023-11-19 05:21:22,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:22,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111348521] [2023-11-19 05:21:22,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:22,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:22,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:22,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:22,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111348521] [2023-11-19 05:21:22,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111348521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:22,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:22,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:21:22,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322215346] [2023-11-19 05:21:22,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:22,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:21:22,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:22,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:21:22,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:22,931 INFO L87 Difference]: Start difference. First operand has 13747 states, 13575 states have (on average 4.047587476979742) internal successors, (54946), 13746 states have internal predecessors, (54946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:23,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:23,323 INFO L93 Difference]: Finished difference Result 8978 states and 33610 transitions. [2023-11-19 05:21:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:21:23,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:21:23,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:23,459 INFO L225 Difference]: With dead ends: 8978 [2023-11-19 05:21:23,460 INFO L226 Difference]: Without dead ends: 8978 [2023-11-19 05:21:23,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:23,462 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:23,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 11 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:21:23,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8978 states. [2023-11-19 05:21:23,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8978 to 8918. [2023-11-19 05:21:24,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8918 states, 8918 states have (on average 3.752186588921283) internal successors, (33462), 8917 states have internal predecessors, (33462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8918 states to 8918 states and 33462 transitions. [2023-11-19 05:21:24,093 INFO L78 Accepts]: Start accepts. Automaton has 8918 states and 33462 transitions. Word has length 8 [2023-11-19 05:21:24,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:24,093 INFO L495 AbstractCegarLoop]: Abstraction has 8918 states and 33462 transitions. [2023-11-19 05:21:24,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 8918 states and 33462 transitions. [2023-11-19 05:21:24,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:21:24,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:24,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:24,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:21:24,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:21:24,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:24,096 INFO L85 PathProgramCache]: Analyzing trace with hash -674742669, now seen corresponding path program 1 times [2023-11-19 05:21:24,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:24,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789392178] [2023-11-19 05:21:24,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:24,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:24,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:24,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:24,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789392178] [2023-11-19 05:21:24,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789392178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:24,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:24,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:24,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768921608] [2023-11-19 05:21:24,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:24,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:21:24,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:24,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:21:24,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:24,214 INFO L87 Difference]: Start difference. First operand 8918 states and 33462 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:24,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:24,780 INFO L93 Difference]: Finished difference Result 11922 states and 43310 transitions. [2023-11-19 05:21:24,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:21:24,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 05:21:24,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:24,905 INFO L225 Difference]: With dead ends: 11922 [2023-11-19 05:21:24,905 INFO L226 Difference]: Without dead ends: 11922 [2023-11-19 05:21:24,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:21:24,906 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 108 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:24,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 40 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:21:24,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11922 states. [2023-11-19 05:21:25,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11922 to 10182. [2023-11-19 05:21:25,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10182 states, 10182 states have (on average 3.7417010410528384) internal successors, (38098), 10181 states have internal predecessors, (38098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:25,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10182 states to 10182 states and 38098 transitions. [2023-11-19 05:21:25,677 INFO L78 Accepts]: Start accepts. Automaton has 10182 states and 38098 transitions. Word has length 10 [2023-11-19 05:21:25,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:25,677 INFO L495 AbstractCegarLoop]: Abstraction has 10182 states and 38098 transitions. [2023-11-19 05:21:25,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:25,678 INFO L276 IsEmpty]: Start isEmpty. Operand 10182 states and 38098 transitions. [2023-11-19 05:21:25,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:21:25,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:25,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:25,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:21:25,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:21:25,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:25,681 INFO L85 PathProgramCache]: Analyzing trace with hash -674742667, now seen corresponding path program 1 times [2023-11-19 05:21:25,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:25,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445766884] [2023-11-19 05:21:25,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:25,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:25,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:25,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445766884] [2023-11-19 05:21:25,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445766884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:25,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:25,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:25,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780477171] [2023-11-19 05:21:25,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:25,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:21:25,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:25,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:21:25,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:25,768 INFO L87 Difference]: Start difference. First operand 10182 states and 38098 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:26,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:26,176 INFO L93 Difference]: Finished difference Result 12206 states and 43882 transitions. [2023-11-19 05:21:26,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:21:26,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 05:21:26,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:26,379 INFO L225 Difference]: With dead ends: 12206 [2023-11-19 05:21:26,379 INFO L226 Difference]: Without dead ends: 12206 [2023-11-19 05:21:26,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:21:26,380 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 117 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:26,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 30 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:21:26,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12206 states. [2023-11-19 05:21:26,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12206 to 10626. [2023-11-19 05:21:26,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10626 states, 10626 states have (on average 3.675701110483719) internal successors, (39058), 10625 states have internal predecessors, (39058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10626 states to 10626 states and 39058 transitions. [2023-11-19 05:21:27,169 INFO L78 Accepts]: Start accepts. Automaton has 10626 states and 39058 transitions. Word has length 10 [2023-11-19 05:21:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:27,169 INFO L495 AbstractCegarLoop]: Abstraction has 10626 states and 39058 transitions. [2023-11-19 05:21:27,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 10626 states and 39058 transitions. [2023-11-19 05:21:27,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:21:27,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:27,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:27,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:21:27,173 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:21:27,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:27,174 INFO L85 PathProgramCache]: Analyzing trace with hash 624905480, now seen corresponding path program 1 times [2023-11-19 05:21:27,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:27,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623274316] [2023-11-19 05:21:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:27,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:27,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:27,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623274316] [2023-11-19 05:21:27,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623274316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:27,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:27,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:21:27,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306448558] [2023-11-19 05:21:27,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:27,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:21:27,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:27,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:21:27,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:21:27,367 INFO L87 Difference]: Start difference. First operand 10626 states and 39058 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:28,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:28,114 INFO L93 Difference]: Finished difference Result 13870 states and 50198 transitions. [2023-11-19 05:21:28,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:21:28,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 05:21:28,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:28,204 INFO L225 Difference]: With dead ends: 13870 [2023-11-19 05:21:28,205 INFO L226 Difference]: Without dead ends: 13870 [2023-11-19 05:21:28,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:21:28,206 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 219 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:28,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 76 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:21:28,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13870 states. [2023-11-19 05:21:28,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13870 to 11590. [2023-11-19 05:21:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11590 states, 11590 states have (on average 3.706125970664366) internal successors, (42954), 11589 states have internal predecessors, (42954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:28,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11590 states to 11590 states and 42954 transitions. [2023-11-19 05:21:28,799 INFO L78 Accepts]: Start accepts. Automaton has 11590 states and 42954 transitions. Word has length 14 [2023-11-19 05:21:28,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:28,800 INFO L495 AbstractCegarLoop]: Abstraction has 11590 states and 42954 transitions. [2023-11-19 05:21:28,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:28,800 INFO L276 IsEmpty]: Start isEmpty. Operand 11590 states and 42954 transitions. [2023-11-19 05:21:28,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:21:28,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:28,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:28,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 05:21:28,812 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:21:28,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:28,813 INFO L85 PathProgramCache]: Analyzing trace with hash 624905517, now seen corresponding path program 1 times [2023-11-19 05:21:28,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:28,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237210966] [2023-11-19 05:21:28,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:28,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:28,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:28,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237210966] [2023-11-19 05:21:28,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237210966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:28,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:28,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:21:28,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018666595] [2023-11-19 05:21:28,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:28,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:21:28,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:28,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:21:28,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:21:28,947 INFO L87 Difference]: Start difference. First operand 11590 states and 42954 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:29,702 INFO L93 Difference]: Finished difference Result 13874 states and 49486 transitions. [2023-11-19 05:21:29,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:21:29,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 05:21:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:29,794 INFO L225 Difference]: With dead ends: 13874 [2023-11-19 05:21:29,794 INFO L226 Difference]: Without dead ends: 13874 [2023-11-19 05:21:29,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:21:29,795 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 201 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:29,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 79 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:21:29,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13874 states. [2023-11-19 05:21:30,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13874 to 11654. [2023-11-19 05:21:30,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11654 states, 11654 states have (on average 3.637377724386477) internal successors, (42390), 11653 states have internal predecessors, (42390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:30,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11654 states to 11654 states and 42390 transitions. [2023-11-19 05:21:30,646 INFO L78 Accepts]: Start accepts. Automaton has 11654 states and 42390 transitions. Word has length 14 [2023-11-19 05:21:30,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:30,647 INFO L495 AbstractCegarLoop]: Abstraction has 11654 states and 42390 transitions. [2023-11-19 05:21:30,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:30,647 INFO L276 IsEmpty]: Start isEmpty. Operand 11654 states and 42390 transitions. [2023-11-19 05:21:30,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:21:30,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:30,649 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:30,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 05:21:30,649 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:21:30,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:30,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2132017593, now seen corresponding path program 1 times [2023-11-19 05:21:30,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:30,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687517539] [2023-11-19 05:21:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:30,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:21:30,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:30,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687517539] [2023-11-19 05:21:30,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687517539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:30,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:30,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:30,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367988901] [2023-11-19 05:21:30,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:30,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:21:30,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:30,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:21:30,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:30,721 INFO L87 Difference]: Start difference. First operand 11654 states and 42390 transitions. Second operand has 5 states, 4 states have (on average 3.25) 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) [2023-11-19 05:21:31,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:31,141 INFO L93 Difference]: Finished difference Result 13774 states and 49626 transitions. [2023-11-19 05:21:31,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:21:31,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) 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 14 [2023-11-19 05:21:31,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:31,369 INFO L225 Difference]: With dead ends: 13774 [2023-11-19 05:21:31,369 INFO L226 Difference]: Without dead ends: 13774 [2023-11-19 05:21:31,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:21:31,370 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 108 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:31,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 47 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:21:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13774 states. [2023-11-19 05:21:31,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13774 to 11954. [2023-11-19 05:21:31,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11954 states, 11954 states have (on average 3.6732474485527855) internal successors, (43910), 11953 states have internal predecessors, (43910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:31,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11954 states to 11954 states and 43910 transitions. [2023-11-19 05:21:31,877 INFO L78 Accepts]: Start accepts. Automaton has 11954 states and 43910 transitions. Word has length 14 [2023-11-19 05:21:31,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:31,877 INFO L495 AbstractCegarLoop]: Abstraction has 11954 states and 43910 transitions. [2023-11-19 05:21:31,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) 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) [2023-11-19 05:21:31,877 INFO L276 IsEmpty]: Start isEmpty. Operand 11954 states and 43910 transitions. [2023-11-19 05:21:31,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:21:31,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:31,879 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:31,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 05:21:31,879 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:21:31,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:31,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2132017594, now seen corresponding path program 1 times [2023-11-19 05:21:31,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:31,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752616878] [2023-11-19 05:21:31,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:31,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:21:31,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:31,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752616878] [2023-11-19 05:21:31,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752616878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:31,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:31,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:31,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470591780] [2023-11-19 05:21:31,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:31,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:21:31,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:31,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:21:31,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:31,957 INFO L87 Difference]: Start difference. First operand 11954 states and 43910 transitions. Second operand has 5 states, 4 states have (on average 3.25) 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) [2023-11-19 05:21:32,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:32,481 INFO L93 Difference]: Finished difference Result 13434 states and 48094 transitions. [2023-11-19 05:21:32,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:21:32,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) 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 14 [2023-11-19 05:21:32,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:32,556 INFO L225 Difference]: With dead ends: 13434 [2023-11-19 05:21:32,556 INFO L226 Difference]: Without dead ends: 13434 [2023-11-19 05:21:32,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:21:32,558 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 112 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:32,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 33 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:21:32,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13434 states. [2023-11-19 05:21:32,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13434 to 11534. [2023-11-19 05:21:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11534 states, 11534 states have (on average 3.6426218137679904) internal successors, (42014), 11533 states have internal predecessors, (42014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11534 states to 11534 states and 42014 transitions. [2023-11-19 05:21:33,068 INFO L78 Accepts]: Start accepts. Automaton has 11534 states and 42014 transitions. Word has length 14 [2023-11-19 05:21:33,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:33,070 INFO L495 AbstractCegarLoop]: Abstraction has 11534 states and 42014 transitions. [2023-11-19 05:21:33,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) 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) [2023-11-19 05:21:33,070 INFO L276 IsEmpty]: Start isEmpty. Operand 11534 states and 42014 transitions. [2023-11-19 05:21:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:21:33,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:33,072 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:33,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 05:21:33,073 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:21:33,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:33,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2122441405, now seen corresponding path program 1 times [2023-11-19 05:21:33,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:33,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386419504] [2023-11-19 05:21:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:33,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:21:33,097 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:21:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:21:33,119 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:21:33,119 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:21:33,120 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2023-11-19 05:21:33,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2023-11-19 05:21:33,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2023-11-19 05:21:33,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2023-11-19 05:21:33,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2023-11-19 05:21:33,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2023-11-19 05:21:33,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2023-11-19 05:21:33,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2023-11-19 05:21:33,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2023-11-19 05:21:33,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 26 remaining) [2023-11-19 05:21:33,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2023-11-19 05:21:33,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2023-11-19 05:21:33,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2023-11-19 05:21:33,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 26 remaining) [2023-11-19 05:21:33,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2023-11-19 05:21:33,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2023-11-19 05:21:33,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2023-11-19 05:21:33,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2023-11-19 05:21:33,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2023-11-19 05:21:33,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2023-11-19 05:21:33,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2023-11-19 05:21:33,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2023-11-19 05:21:33,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2023-11-19 05:21:33,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2023-11-19 05:21:33,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2023-11-19 05:21:33,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2023-11-19 05:21:33,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 05:21:33,128 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:33,128 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 05:21:33,128 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 05:21:33,194 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:21:33,198 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:21:33,198 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 220 transitions, 476 flow [2023-11-19 05:21:33,199 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 220 transitions, 476 flow [2023-11-19 05:21:33,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 220 transitions, 476 flow [2023-11-19 05:21:33,439 INFO L124 PetriNetUnfolderBase]: 11/220 cut-off events. [2023-11-19 05:21:33,441 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 05:21:33,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 220 events. 11/220 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 590 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 231. Up to 8 conditions per place. [2023-11-19 05:21:33,464 INFO L119 LiptonReduction]: Number of co-enabled transitions 19996 [2023-11-19 05:21:37,864 INFO L134 LiptonReduction]: Checked pairs total: 54800 [2023-11-19 05:21:37,865 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-11-19 05:21:37,866 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 90 transitions, 216 flow [2023-11-19 05:21:50,183 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 289207 states, 287662 states have (on average 5.024414069289652) internal successors, (1445333), 289206 states have internal predecessors, (1445333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:50,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:21:50,187 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;@37b65861, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:21:50,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-11-19 05:21:50,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 289207 states, 287662 states have (on average 5.024414069289652) internal successors, (1445333), 289206 states have internal predecessors, (1445333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:50,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:21:50,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:50,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:50,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-19 05:21:50,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:50,657 INFO L85 PathProgramCache]: Analyzing trace with hash -130508493, now seen corresponding path program 1 times [2023-11-19 05:21:50,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:50,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902675936] [2023-11-19 05:21:50,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:50,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:50,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:50,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902675936] [2023-11-19 05:21:50,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902675936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:50,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:50,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:21:50,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205661663] [2023-11-19 05:21:50,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:50,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:21:50,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:50,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:21:50,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:51,205 INFO L87 Difference]: Start difference. First operand has 289207 states, 287662 states have (on average 5.024414069289652) internal successors, (1445333), 289206 states have internal predecessors, (1445333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)