./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_longer.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_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/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_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/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_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:53:50,747 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:53:50,826 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 04:53:50,832 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:53:50,833 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:53:50,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:53:50,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:53:50,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:53:50,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:53:50,900 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:53:50,901 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:53:50,901 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:53:50,901 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:53:50,902 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:53:50,902 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:53:50,903 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:53:50,903 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:53:50,904 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:53:50,904 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:53:50,905 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:53:50,905 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:53:50,906 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:53:50,907 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:53:50,907 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:53:50,908 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:53:50,908 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:53:50,908 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:53:50,909 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:53:50,909 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:53:50,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:53:50,910 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:53:50,911 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:53:50,911 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:53:50,911 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:53:50,912 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:53:50,912 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:53:50,912 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:53:50,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:53:50,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:50,925 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:53:50,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:53:50,926 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:53:50,926 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:53:50,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:53:50,926 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:53:50,927 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:53:50,927 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:53:50,927 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_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2023-11-19 04:53:51,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:53:51,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:53:51,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:53:51,300 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:53:51,301 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:53:51,302 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread/queue_longer.i [2023-11-19 04:53:54,426 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:53:54,765 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:53:54,766 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/sv-benchmarks/c/pthread/queue_longer.i [2023-11-19 04:53:54,786 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/data/d88950dc3/013be472869441ca922e32a9f84a1fbc/FLAGf97d953bb [2023-11-19 04:53:54,802 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/data/d88950dc3/013be472869441ca922e32a9f84a1fbc [2023-11-19 04:53:54,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:53:54,806 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:53:54,808 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:54,808 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:53:54,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:53:54,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:54" (1/1) ... [2023-11-19 04:53:54,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@83833c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:54, skipping insertion in model container [2023-11-19 04:53:54,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:54" (1/1) ... [2023-11-19 04:53:54,903 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:53:55,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:55,435 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:53:55,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:55,636 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:53:55,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:55 WrapperNode [2023-11-19 04:53:55,637 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:55,638 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:53:55,639 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:53:55,639 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:53:55,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:55" (1/1) ... [2023-11-19 04:53:55,682 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:55" (1/1) ... [2023-11-19 04:53:55,748 INFO L138 Inliner]: procedures = 274, calls = 63, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 269 [2023-11-19 04:53:55,750 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:53:55,751 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:53:55,751 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:53:55,751 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:53:55,761 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:55" (1/1) ... [2023-11-19 04:53:55,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:55" (1/1) ... [2023-11-19 04:53:55,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:55" (1/1) ... [2023-11-19 04:53:55,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:55" (1/1) ... [2023-11-19 04:53:55,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:55" (1/1) ... [2023-11-19 04:53:55,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:55" (1/1) ... [2023-11-19 04:53:55,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:55" (1/1) ... [2023-11-19 04:53:55,825 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:55" (1/1) ... [2023-11-19 04:53:55,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:53:55,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:53:55,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:53:55,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:53:55,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:55" (1/1) ... [2023-11-19 04:53:55,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:55,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:53:55,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:53:55,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:53:55,919 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 04:53:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 04:53:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 04:53:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 04:53:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:53:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:53:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:53:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:53:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 04:53:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:53:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:53:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:53:55,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:53:55,926 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 04:53:56,150 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:53:56,153 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:53:56,659 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:53:56,674 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:53:56,674 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 04:53:56,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:56 BoogieIcfgContainer [2023-11-19 04:53:56,681 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:53:56,683 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:53:56,683 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:53:56,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:53:56,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:53:54" (1/3) ... [2023-11-19 04:53:56,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea81b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:56, skipping insertion in model container [2023-11-19 04:53:56,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:55" (2/3) ... [2023-11-19 04:53:56,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea81b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:56, skipping insertion in model container [2023-11-19 04:53:56,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:56" (3/3) ... [2023-11-19 04:53:56,690 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2023-11-19 04:53:56,706 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 04:53:56,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:53:56,719 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-19 04:53:56,719 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:53:56,897 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 04:53:56,941 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:53:56,958 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 307 places, 318 transitions, 650 flow [2023-11-19 04:53:56,961 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 307 places, 318 transitions, 650 flow [2023-11-19 04:53:56,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 318 transitions, 650 flow [2023-11-19 04:53:57,104 INFO L124 PetriNetUnfolderBase]: 18/316 cut-off events. [2023-11-19 04:53:57,104 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 04:53:57,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 316 events. 18/316 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 520 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 235. Up to 2 conditions per place. [2023-11-19 04:53:57,133 INFO L119 LiptonReduction]: Number of co-enabled transitions 25932 [2023-11-19 04:54:07,963 INFO L134 LiptonReduction]: Checked pairs total: 52886 [2023-11-19 04:54:07,963 INFO L136 LiptonReduction]: Total number of compositions: 315 [2023-11-19 04:54:07,972 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 80 transitions, 174 flow [2023-11-19 04:54:08,105 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1882 states, 1792 states have (on average 2.8286830357142856) internal successors, (5069), 1881 states have internal predecessors, (5069), 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 04:54:08,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:54:08,131 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;@2423009e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:54:08,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-19 04:54:08,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 1882 states, 1792 states have (on average 2.8286830357142856) internal successors, (5069), 1881 states have internal predecessors, (5069), 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 04:54:08,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:54:08,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:08,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:54:08,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:08,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:08,153 INFO L85 PathProgramCache]: Analyzing trace with hash -906183935, now seen corresponding path program 1 times [2023-11-19 04:54:08,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:08,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660712115] [2023-11-19 04:54:08,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:08,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:09,267 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 04:54:09,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:09,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660712115] [2023-11-19 04:54:09,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660712115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:09,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:09,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:54:09,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008577411] [2023-11-19 04:54:09,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:09,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:54:09,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:09,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:54:09,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:54:09,314 INFO L87 Difference]: Start difference. First operand has 1882 states, 1792 states have (on average 2.8286830357142856) internal successors, (5069), 1881 states have internal predecessors, (5069), 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 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 04:54:09,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:09,688 INFO L93 Difference]: Finished difference Result 1880 states and 4939 transitions. [2023-11-19 04:54:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:54:09,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 04:54:09,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:09,734 INFO L225 Difference]: With dead ends: 1880 [2023-11-19 04:54:09,734 INFO L226 Difference]: Without dead ends: 1880 [2023-11-19 04:54:09,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:54:09,738 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:09,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:54:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2023-11-19 04:54:09,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1880. [2023-11-19 04:54:09,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1790 states have (on average 2.7592178770949722) internal successors, (4939), 1879 states have internal predecessors, (4939), 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 04:54:09,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 4939 transitions. [2023-11-19 04:54:09,919 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 4939 transitions. Word has length 6 [2023-11-19 04:54:09,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:09,920 INFO L495 AbstractCegarLoop]: Abstraction has 1880 states and 4939 transitions. [2023-11-19 04:54:09,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 04:54:09,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 4939 transitions. [2023-11-19 04:54:09,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:54:09,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:09,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:09,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:54:09,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:09,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:09,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1973516272, now seen corresponding path program 1 times [2023-11-19 04:54:09,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:09,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758047596] [2023-11-19 04:54:09,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:09,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:10,284 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 04:54:10,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:10,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758047596] [2023-11-19 04:54:10,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758047596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:10,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:10,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:54:10,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931216099] [2023-11-19 04:54:10,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:10,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:54:10,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:10,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:54:10,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:54:10,288 INFO L87 Difference]: Start difference. First operand 1880 states and 4939 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 04:54:10,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:10,670 INFO L93 Difference]: Finished difference Result 2021 states and 5304 transitions. [2023-11-19 04:54:10,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:54:10,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 04:54:10,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:10,756 INFO L225 Difference]: With dead ends: 2021 [2023-11-19 04:54:10,757 INFO L226 Difference]: Without dead ends: 2021 [2023-11-19 04:54:10,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:54:10,759 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 63 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:10,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 23 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:54:10,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2023-11-19 04:54:10,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1970. [2023-11-19 04:54:10,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1880 states have (on average 2.751595744680851) internal successors, (5173), 1969 states have internal predecessors, (5173), 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 04:54:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 5173 transitions. [2023-11-19 04:54:10,846 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 5173 transitions. Word has length 7 [2023-11-19 04:54:10,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:10,851 INFO L495 AbstractCegarLoop]: Abstraction has 1970 states and 5173 transitions. [2023-11-19 04:54:10,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 04:54:10,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 5173 transitions. [2023-11-19 04:54:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:54:10,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:10,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:10,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:54:10,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:10,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:10,857 INFO L85 PathProgramCache]: Analyzing trace with hash 432808760, now seen corresponding path program 1 times [2023-11-19 04:54:10,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:10,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590663835] [2023-11-19 04:54:10,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:10,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:10,917 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 04:54:10,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:10,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590663835] [2023-11-19 04:54:10,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590663835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:10,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:10,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:54:10,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109177545] [2023-11-19 04:54:10,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:10,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:54:10,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:10,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:54:10,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:54:10,920 INFO L87 Difference]: Start difference. First operand 1970 states and 5173 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:11,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:11,164 INFO L93 Difference]: Finished difference Result 3434 states and 9083 transitions. [2023-11-19 04:54:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:54:11,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 04:54:11,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:11,197 INFO L225 Difference]: With dead ends: 3434 [2023-11-19 04:54:11,197 INFO L226 Difference]: Without dead ends: 3434 [2023-11-19 04:54:11,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:54:11,200 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 63 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:11,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 19 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:54:11,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2023-11-19 04:54:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3114. [2023-11-19 04:54:11,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3114 states, 3024 states have (on average 2.8382936507936507) internal successors, (8583), 3113 states have internal predecessors, (8583), 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 04:54:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 8583 transitions. [2023-11-19 04:54:11,346 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 8583 transitions. Word has length 8 [2023-11-19 04:54:11,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:11,347 INFO L495 AbstractCegarLoop]: Abstraction has 3114 states and 8583 transitions. [2023-11-19 04:54:11,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:11,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 8583 transitions. [2023-11-19 04:54:11,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:54:11,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:11,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:11,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:54:11,354 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:11,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:11,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2040757740, now seen corresponding path program 1 times [2023-11-19 04:54:11,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:11,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202019805] [2023-11-19 04:54:11,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:11,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:11,721 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 04:54:11,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:11,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202019805] [2023-11-19 04:54:11,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202019805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:11,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:11,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:54:11,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522714777] [2023-11-19 04:54:11,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:11,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:54:11,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:11,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:54:11,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:54:11,730 INFO L87 Difference]: Start difference. First operand 3114 states and 8583 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:11,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:11,984 INFO L93 Difference]: Finished difference Result 3111 states and 8576 transitions. [2023-11-19 04:54:11,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:54:11,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 04:54:11,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:12,017 INFO L225 Difference]: With dead ends: 3111 [2023-11-19 04:54:12,017 INFO L226 Difference]: Without dead ends: 3111 [2023-11-19 04:54:12,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:54:12,020 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:12,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:54:12,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2023-11-19 04:54:12,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 3111. [2023-11-19 04:54:12,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 3021 states have (on average 2.8387951009599472) internal successors, (8576), 3110 states have internal predecessors, (8576), 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 04:54:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 8576 transitions. [2023-11-19 04:54:12,153 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 8576 transitions. Word has length 9 [2023-11-19 04:54:12,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:12,156 INFO L495 AbstractCegarLoop]: Abstraction has 3111 states and 8576 transitions. [2023-11-19 04:54:12,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:12,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 8576 transitions. [2023-11-19 04:54:12,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:54:12,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:12,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:12,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:54:12,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:12,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:12,160 INFO L85 PathProgramCache]: Analyzing trace with hash 529093977, now seen corresponding path program 1 times [2023-11-19 04:54:12,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:12,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518503055] [2023-11-19 04:54:12,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:12,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:12,228 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 04:54:12,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:12,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518503055] [2023-11-19 04:54:12,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518503055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:12,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:12,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:54:12,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645102082] [2023-11-19 04:54:12,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:12,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:54:12,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:12,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:54:12,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:54:12,231 INFO L87 Difference]: Start difference. First operand 3111 states and 8576 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:12,412 INFO L93 Difference]: Finished difference Result 2873 states and 7689 transitions. [2023-11-19 04:54:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:54:12,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 04:54:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:12,439 INFO L225 Difference]: With dead ends: 2873 [2023-11-19 04:54:12,440 INFO L226 Difference]: Without dead ends: 2865 [2023-11-19 04:54:12,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:54:12,441 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 50 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:12,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 12 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:54:12,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2023-11-19 04:54:12,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2705. [2023-11-19 04:54:12,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2627 states have (on average 2.832508564902931) internal successors, (7441), 2704 states have internal predecessors, (7441), 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 04:54:12,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 7441 transitions. [2023-11-19 04:54:12,604 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 7441 transitions. Word has length 9 [2023-11-19 04:54:12,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:12,604 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 7441 transitions. [2023-11-19 04:54:12,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:12,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 7441 transitions. [2023-11-19 04:54:12,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:54:12,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:12,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:12,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:54:12,616 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:12,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:12,617 INFO L85 PathProgramCache]: Analyzing trace with hash -782113123, now seen corresponding path program 1 times [2023-11-19 04:54:12,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:12,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324242149] [2023-11-19 04:54:12,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:12,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:13,020 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 04:54:13,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:13,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324242149] [2023-11-19 04:54:13,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324242149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:13,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:13,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:54:13,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662934346] [2023-11-19 04:54:13,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:13,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:54:13,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:13,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:54:13,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:54:13,028 INFO L87 Difference]: Start difference. First operand 2705 states and 7441 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 04:54:13,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:13,335 INFO L93 Difference]: Finished difference Result 2805 states and 7689 transitions. [2023-11-19 04:54:13,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:54:13,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 04:54:13,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:13,369 INFO L225 Difference]: With dead ends: 2805 [2023-11-19 04:54:13,370 INFO L226 Difference]: Without dead ends: 2805 [2023-11-19 04:54:13,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:54:13,372 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 62 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:13,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 19 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:54:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2023-11-19 04:54:13,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2780. [2023-11-19 04:54:13,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2702 states have (on average 2.8227239082161364) internal successors, (7627), 2779 states have internal predecessors, (7627), 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 04:54:13,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 7627 transitions. [2023-11-19 04:54:13,505 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 7627 transitions. Word has length 10 [2023-11-19 04:54:13,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:13,505 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 7627 transitions. [2023-11-19 04:54:13,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 04:54:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 7627 transitions. [2023-11-19 04:54:13,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:54:13,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:13,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:13,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:54:13,507 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:13,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:13,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1161018175, now seen corresponding path program 2 times [2023-11-19 04:54:13,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:13,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428965425] [2023-11-19 04:54:13,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:13,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:13,825 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 04:54:13,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:13,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428965425] [2023-11-19 04:54:13,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428965425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:13,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:13,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:54:13,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685257203] [2023-11-19 04:54:13,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:13,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:54:13,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:13,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:54:13,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:54:13,828 INFO L87 Difference]: Start difference. First operand 2780 states and 7627 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 04:54:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:14,167 INFO L93 Difference]: Finished difference Result 2709 states and 7418 transitions. [2023-11-19 04:54:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:54:14,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 04:54:14,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:14,193 INFO L225 Difference]: With dead ends: 2709 [2023-11-19 04:54:14,194 INFO L226 Difference]: Without dead ends: 2709 [2023-11-19 04:54:14,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:54:14,195 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 42 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:14,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 28 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:54:14,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2023-11-19 04:54:14,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 2634. [2023-11-19 04:54:14,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2564 states have (on average 2.8205928237129485) internal successors, (7232), 2633 states have internal predecessors, (7232), 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 04:54:14,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 7232 transitions. [2023-11-19 04:54:14,294 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 7232 transitions. Word has length 10 [2023-11-19 04:54:14,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:14,295 INFO L495 AbstractCegarLoop]: Abstraction has 2634 states and 7232 transitions. [2023-11-19 04:54:14,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 04:54:14,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 7232 transitions. [2023-11-19 04:54:14,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:54:14,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:14,297 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:14,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 04:54:14,297 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:14,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:14,298 INFO L85 PathProgramCache]: Analyzing trace with hash 318723039, now seen corresponding path program 1 times [2023-11-19 04:54:14,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:14,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403159013] [2023-11-19 04:54:14,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:14,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:14,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:14,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403159013] [2023-11-19 04:54:14,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403159013] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:54:14,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950407624] [2023-11-19 04:54:14,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:14,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:54:14,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:54:14,420 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:54:14,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:54:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:14,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:54:14,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:14,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:54:14,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950407624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:14,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:54:14,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 04:54:14,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534961637] [2023-11-19 04:54:14,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:14,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:54:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:14,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:54:14,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:54:14,604 INFO L87 Difference]: Start difference. First operand 2634 states and 7232 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:14,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:14,883 INFO L93 Difference]: Finished difference Result 2770 states and 7309 transitions. [2023-11-19 04:54:14,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:54:14,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 04:54:14,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:14,897 INFO L225 Difference]: With dead ends: 2770 [2023-11-19 04:54:14,898 INFO L226 Difference]: Without dead ends: 2770 [2023-11-19 04:54:14,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 04:54:14,899 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 118 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:14,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 31 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:54:14,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2023-11-19 04:54:14,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2562. [2023-11-19 04:54:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2501 states have (on average 2.799280287884846) internal successors, (7001), 2561 states have internal predecessors, (7001), 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 04:54:14,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 7001 transitions. [2023-11-19 04:54:14,994 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 7001 transitions. Word has length 11 [2023-11-19 04:54:14,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:14,995 INFO L495 AbstractCegarLoop]: Abstraction has 2562 states and 7001 transitions. [2023-11-19 04:54:14,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:14,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 7001 transitions. [2023-11-19 04:54:14,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:54:14,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:14,996 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:15,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:54:15,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:54:15,212 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:15,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:15,213 INFO L85 PathProgramCache]: Analyzing trace with hash 318723129, now seen corresponding path program 1 times [2023-11-19 04:54:15,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:15,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315614119] [2023-11-19 04:54:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:54:15,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:15,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315614119] [2023-11-19 04:54:15,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315614119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:15,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:15,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:54:15,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865601526] [2023-11-19 04:54:15,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:15,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:54:15,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:15,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:54:15,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:54:15,259 INFO L87 Difference]: Start difference. First operand 2562 states and 7001 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:15,426 INFO L93 Difference]: Finished difference Result 2490 states and 6770 transitions. [2023-11-19 04:54:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:54:15,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 04:54:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:15,437 INFO L225 Difference]: With dead ends: 2490 [2023-11-19 04:54:15,438 INFO L226 Difference]: Without dead ends: 2420 [2023-11-19 04:54:15,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:54:15,439 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 57 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:15,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 17 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:54:15,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2023-11-19 04:54:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 1576. [2023-11-19 04:54:15,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1524 states have (on average 2.776246719160105) internal successors, (4231), 1575 states have internal predecessors, (4231), 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 04:54:15,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 4231 transitions. [2023-11-19 04:54:15,501 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 4231 transitions. Word has length 11 [2023-11-19 04:54:15,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:15,501 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 4231 transitions. [2023-11-19 04:54:15,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:15,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 4231 transitions. [2023-11-19 04:54:15,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 04:54:15,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:15,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:15,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 04:54:15,503 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:15,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:15,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1363611885, now seen corresponding path program 1 times [2023-11-19 04:54:15,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:15,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028980171] [2023-11-19 04:54:15,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:15,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:15,559 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 04:54:15,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:15,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028980171] [2023-11-19 04:54:15,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028980171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:15,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:15,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:54:15,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163041010] [2023-11-19 04:54:15,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:15,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:54:15,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:15,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:54:15,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:54:15,562 INFO L87 Difference]: Start difference. First operand 1576 states and 4231 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:15,735 INFO L93 Difference]: Finished difference Result 1948 states and 5225 transitions. [2023-11-19 04:54:15,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:54:15,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 04:54:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:15,744 INFO L225 Difference]: With dead ends: 1948 [2023-11-19 04:54:15,745 INFO L226 Difference]: Without dead ends: 1948 [2023-11-19 04:54:15,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:54:15,746 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:15,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 15 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:54:15,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2023-11-19 04:54:15,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1884. [2023-11-19 04:54:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1832 states have (on average 2.7974890829694323) internal successors, (5125), 1883 states have internal predecessors, (5125), 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 04:54:15,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 5125 transitions. [2023-11-19 04:54:15,823 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 5125 transitions. Word has length 17 [2023-11-19 04:54:15,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:15,823 INFO L495 AbstractCegarLoop]: Abstraction has 1884 states and 5125 transitions. [2023-11-19 04:54:15,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:15,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 5125 transitions. [2023-11-19 04:54:15,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 04:54:15,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:15,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:15,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 04:54:15,826 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:15,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:15,826 INFO L85 PathProgramCache]: Analyzing trace with hash 675039878, now seen corresponding path program 1 times [2023-11-19 04:54:15,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:15,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114371181] [2023-11-19 04:54:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:15,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:16,465 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 04:54:16,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:16,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114371181] [2023-11-19 04:54:16,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114371181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:16,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:16,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 04:54:16,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259660511] [2023-11-19 04:54:16,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:16,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:54:16,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:16,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:54:16,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:54:16,468 INFO L87 Difference]: Start difference. First operand 1884 states and 5125 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 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 04:54:17,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:17,348 INFO L93 Difference]: Finished difference Result 3534 states and 9663 transitions. [2023-11-19 04:54:17,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 04:54:17,349 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 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 18 [2023-11-19 04:54:17,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:17,362 INFO L225 Difference]: With dead ends: 3534 [2023-11-19 04:54:17,363 INFO L226 Difference]: Without dead ends: 3534 [2023-11-19 04:54:17,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-19 04:54:17,364 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 468 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:17,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 88 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 04:54:17,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3534 states. [2023-11-19 04:54:17,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3534 to 3004. [2023-11-19 04:54:17,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3004 states, 2952 states have (on average 2.9495257452574526) internal successors, (8707), 3003 states have internal predecessors, (8707), 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 04:54:17,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3004 states to 3004 states and 8707 transitions. [2023-11-19 04:54:17,474 INFO L78 Accepts]: Start accepts. Automaton has 3004 states and 8707 transitions. Word has length 18 [2023-11-19 04:54:17,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:17,475 INFO L495 AbstractCegarLoop]: Abstraction has 3004 states and 8707 transitions. [2023-11-19 04:54:17,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 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 04:54:17,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3004 states and 8707 transitions. [2023-11-19 04:54:17,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 04:54:17,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:17,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:17,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 04:54:17,477 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:17,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:17,478 INFO L85 PathProgramCache]: Analyzing trace with hash 675039923, now seen corresponding path program 1 times [2023-11-19 04:54:17,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:17,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076466584] [2023-11-19 04:54:17,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:17,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:18,716 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 04:54:18,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076466584] [2023-11-19 04:54:18,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076466584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:18,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:18,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 04:54:18,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270151379] [2023-11-19 04:54:18,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:18,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 04:54:18,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:18,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 04:54:18,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:54:18,719 INFO L87 Difference]: Start difference. First operand 3004 states and 8707 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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 04:54:19,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:19,601 INFO L93 Difference]: Finished difference Result 3031 states and 8748 transitions. [2023-11-19 04:54:19,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 04:54:19,602 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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 18 [2023-11-19 04:54:19,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:19,615 INFO L225 Difference]: With dead ends: 3031 [2023-11-19 04:54:19,615 INFO L226 Difference]: Without dead ends: 3031 [2023-11-19 04:54:19,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2023-11-19 04:54:19,616 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:19,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 63 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 04:54:19,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2023-11-19 04:54:19,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 3003. [2023-11-19 04:54:19,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2951 states have (on average 2.949508641138597) internal successors, (8704), 3002 states have internal predecessors, (8704), 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 04:54:19,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 8704 transitions. [2023-11-19 04:54:19,711 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 8704 transitions. Word has length 18 [2023-11-19 04:54:19,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:19,711 INFO L495 AbstractCegarLoop]: Abstraction has 3003 states and 8704 transitions. [2023-11-19 04:54:19,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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 04:54:19,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 8704 transitions. [2023-11-19 04:54:19,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:54:19,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:19,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:19,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 04:54:19,714 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:19,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:19,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1660557602, now seen corresponding path program 1 times [2023-11-19 04:54:19,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:19,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816437560] [2023-11-19 04:54:19,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:19,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:20,859 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 04:54:20,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:20,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816437560] [2023-11-19 04:54:20,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816437560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:20,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:20,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-19 04:54:20,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867714110] [2023-11-19 04:54:20,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:20,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 04:54:20,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:20,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 04:54:20,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-19 04:54:20,861 INFO L87 Difference]: Start difference. First operand 3003 states and 8704 transitions. Second operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 04:54:21,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:21,829 INFO L93 Difference]: Finished difference Result 3171 states and 9084 transitions. [2023-11-19 04:54:21,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 04:54:21,830 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 19 [2023-11-19 04:54:21,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:21,844 INFO L225 Difference]: With dead ends: 3171 [2023-11-19 04:54:21,844 INFO L226 Difference]: Without dead ends: 3171 [2023-11-19 04:54:21,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2023-11-19 04:54:21,846 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 214 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:21,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 79 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 04:54:21,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2023-11-19 04:54:21,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3083. [2023-11-19 04:54:21,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3083 states, 3031 states have (on average 2.9409435829759154) internal successors, (8914), 3082 states have internal predecessors, (8914), 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 04:54:21,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 8914 transitions. [2023-11-19 04:54:21,941 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 8914 transitions. Word has length 19 [2023-11-19 04:54:21,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:21,941 INFO L495 AbstractCegarLoop]: Abstraction has 3083 states and 8914 transitions. [2023-11-19 04:54:21,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 04:54:21,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 8914 transitions. [2023-11-19 04:54:21,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:54:21,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:21,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:21,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 04:54:21,944 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:21,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:21,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1520859021, now seen corresponding path program 1 times [2023-11-19 04:54:21,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:21,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757774669] [2023-11-19 04:54:21,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:21,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:22,889 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 04:54:22,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:22,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757774669] [2023-11-19 04:54:22,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757774669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:22,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:22,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 04:54:22,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407692472] [2023-11-19 04:54:22,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:22,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 04:54:22,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:22,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 04:54:22,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:54:22,891 INFO L87 Difference]: Start difference. First operand 3083 states and 8914 transitions. Second operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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 04:54:23,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:23,919 INFO L93 Difference]: Finished difference Result 3434 states and 9838 transitions. [2023-11-19 04:54:23,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 04:54:23,920 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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 19 [2023-11-19 04:54:23,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:23,934 INFO L225 Difference]: With dead ends: 3434 [2023-11-19 04:54:23,934 INFO L226 Difference]: Without dead ends: 3434 [2023-11-19 04:54:23,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2023-11-19 04:54:23,935 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 206 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:23,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 95 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 04:54:23,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2023-11-19 04:54:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3243. [2023-11-19 04:54:24,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 3191 states have (on average 2.9420244437480414) internal successors, (9388), 3242 states have internal predecessors, (9388), 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 04:54:24,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 9388 transitions. [2023-11-19 04:54:24,063 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 9388 transitions. Word has length 19 [2023-11-19 04:54:24,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:24,063 INFO L495 AbstractCegarLoop]: Abstraction has 3243 states and 9388 transitions. [2023-11-19 04:54:24,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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 04:54:24,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 9388 transitions. [2023-11-19 04:54:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:54:24,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:24,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:24,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 04:54:24,066 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:24,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:24,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1520859066, now seen corresponding path program 2 times [2023-11-19 04:54:24,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:24,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479161544] [2023-11-19 04:54:24,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:24,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:25,073 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 04:54:25,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:25,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479161544] [2023-11-19 04:54:25,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479161544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:25,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:25,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-19 04:54:25,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980833505] [2023-11-19 04:54:25,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:25,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 04:54:25,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:25,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 04:54:25,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-19 04:54:25,075 INFO L87 Difference]: Start difference. First operand 3243 states and 9388 transitions. Second operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 04:54:26,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:26,031 INFO L93 Difference]: Finished difference Result 3411 states and 9768 transitions. [2023-11-19 04:54:26,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 04:54:26,031 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 19 [2023-11-19 04:54:26,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:26,045 INFO L225 Difference]: With dead ends: 3411 [2023-11-19 04:54:26,046 INFO L226 Difference]: Without dead ends: 3411 [2023-11-19 04:54:26,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2023-11-19 04:54:26,047 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 222 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:26,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 84 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 04:54:26,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2023-11-19 04:54:26,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 3038. [2023-11-19 04:54:26,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3038 states, 2986 states have (on average 2.946081714668453) internal successors, (8797), 3037 states have internal predecessors, (8797), 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 04:54:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 8797 transitions. [2023-11-19 04:54:26,141 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 8797 transitions. Word has length 19 [2023-11-19 04:54:26,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:26,141 INFO L495 AbstractCegarLoop]: Abstraction has 3038 states and 8797 transitions. [2023-11-19 04:54:26,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 04:54:26,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 8797 transitions. [2023-11-19 04:54:26,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:54:26,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:26,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:26,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 04:54:26,143 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:26,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:26,144 INFO L85 PathProgramCache]: Analyzing trace with hash -289051529, now seen corresponding path program 2 times [2023-11-19 04:54:26,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:26,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006839676] [2023-11-19 04:54:26,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:26,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:27,144 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 04:54:27,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:27,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006839676] [2023-11-19 04:54:27,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006839676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:27,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:27,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-19 04:54:27,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016269631] [2023-11-19 04:54:27,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:27,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 04:54:27,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:27,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 04:54:27,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-19 04:54:27,146 INFO L87 Difference]: Start difference. First operand 3038 states and 8797 transitions. Second operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 04:54:28,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:28,120 INFO L93 Difference]: Finished difference Result 3269 states and 9380 transitions. [2023-11-19 04:54:28,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 04:54:28,121 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 19 [2023-11-19 04:54:28,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:28,136 INFO L225 Difference]: With dead ends: 3269 [2023-11-19 04:54:28,136 INFO L226 Difference]: Without dead ends: 3269 [2023-11-19 04:54:28,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2023-11-19 04:54:28,137 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 190 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:28,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 93 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 04:54:28,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2023-11-19 04:54:28,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3078. [2023-11-19 04:54:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 3026 states have (on average 2.9487772637144745) internal successors, (8923), 3077 states have internal predecessors, (8923), 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 04:54:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 8923 transitions. [2023-11-19 04:54:28,226 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 8923 transitions. Word has length 19 [2023-11-19 04:54:28,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:28,227 INFO L495 AbstractCegarLoop]: Abstraction has 3078 states and 8923 transitions. [2023-11-19 04:54:28,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 04:54:28,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 8923 transitions. [2023-11-19 04:54:28,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:54:28,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:28,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:28,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 04:54:28,229 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:28,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:28,230 INFO L85 PathProgramCache]: Analyzing trace with hash -289051484, now seen corresponding path program 3 times [2023-11-19 04:54:28,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:28,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875542703] [2023-11-19 04:54:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:28,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:29,109 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 04:54:29,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:29,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875542703] [2023-11-19 04:54:29,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875542703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:29,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:29,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-19 04:54:29,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989536261] [2023-11-19 04:54:29,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:29,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 04:54:29,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:29,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 04:54:29,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-19 04:54:29,111 INFO L87 Difference]: Start difference. First operand 3078 states and 8923 transitions. Second operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 04:54:30,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:30,048 INFO L93 Difference]: Finished difference Result 3246 states and 9310 transitions. [2023-11-19 04:54:30,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 04:54:30,049 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 19 [2023-11-19 04:54:30,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:30,065 INFO L225 Difference]: With dead ends: 3246 [2023-11-19 04:54:30,065 INFO L226 Difference]: Without dead ends: 3246 [2023-11-19 04:54:30,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2023-11-19 04:54:30,069 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 189 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:30,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 94 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 04:54:30,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2023-11-19 04:54:30,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2918. [2023-11-19 04:54:30,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2918 states, 2866 states have (on average 2.9480111653872996) internal successors, (8449), 2917 states have internal predecessors, (8449), 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 04:54:30,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 8449 transitions. [2023-11-19 04:54:30,148 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 8449 transitions. Word has length 19 [2023-11-19 04:54:30,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:30,149 INFO L495 AbstractCegarLoop]: Abstraction has 2918 states and 8449 transitions. [2023-11-19 04:54:30,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 04:54:30,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 8449 transitions. [2023-11-19 04:54:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:54:30,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:30,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:30,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 04:54:30,152 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:30,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:30,153 INFO L85 PathProgramCache]: Analyzing trace with hash -548240797, now seen corresponding path program 3 times [2023-11-19 04:54:30,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:30,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434804260] [2023-11-19 04:54:30,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:30,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:31,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:31,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434804260] [2023-11-19 04:54:31,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434804260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:31,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:31,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-19 04:54:31,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505062754] [2023-11-19 04:54:31,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:31,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 04:54:31,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:31,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 04:54:31,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-19 04:54:31,061 INFO L87 Difference]: Start difference. First operand 2918 states and 8449 transitions. Second operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 04:54:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:32,129 INFO L93 Difference]: Finished difference Result 3034 states and 8672 transitions. [2023-11-19 04:54:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 04:54:32,129 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 19 [2023-11-19 04:54:32,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:32,140 INFO L225 Difference]: With dead ends: 3034 [2023-11-19 04:54:32,141 INFO L226 Difference]: Without dead ends: 3034 [2023-11-19 04:54:32,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-11-19 04:54:32,142 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 220 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:32,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 109 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 04:54:32,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2023-11-19 04:54:32,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 2913. [2023-11-19 04:54:32,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2913 states, 2861 states have (on average 2.94302691366655) internal successors, (8420), 2912 states have internal predecessors, (8420), 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 04:54:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 8420 transitions. [2023-11-19 04:54:32,239 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 8420 transitions. Word has length 19 [2023-11-19 04:54:32,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:32,239 INFO L495 AbstractCegarLoop]: Abstraction has 2913 states and 8420 transitions. [2023-11-19 04:54:32,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 04:54:32,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 8420 transitions. [2023-11-19 04:54:32,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:54:32,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:32,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:32,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 04:54:32,243 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:32,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:32,244 INFO L85 PathProgramCache]: Analyzing trace with hash -548240752, now seen corresponding path program 4 times [2023-11-19 04:54:32,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:32,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087492642] [2023-11-19 04:54:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:32,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:33,523 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 04:54:33,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:33,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087492642] [2023-11-19 04:54:33,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087492642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:33,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:33,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-19 04:54:33,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584774039] [2023-11-19 04:54:33,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:33,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 04:54:33,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:33,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 04:54:33,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-19 04:54:33,527 INFO L87 Difference]: Start difference. First operand 2913 states and 8420 transitions. Second operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 04:54:34,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:34,731 INFO L93 Difference]: Finished difference Result 3316 states and 9451 transitions. [2023-11-19 04:54:34,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 04:54:34,732 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 19 [2023-11-19 04:54:34,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:34,743 INFO L225 Difference]: With dead ends: 3316 [2023-11-19 04:54:34,744 INFO L226 Difference]: Without dead ends: 3316 [2023-11-19 04:54:34,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2023-11-19 04:54:34,745 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 234 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:34,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 98 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 04:54:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2023-11-19 04:54:34,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 2868. [2023-11-19 04:54:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2868 states, 2816 states have (on average 2.942116477272727) internal successors, (8285), 2867 states have internal predecessors, (8285), 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 04:54:34,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 8285 transitions. [2023-11-19 04:54:34,820 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 8285 transitions. Word has length 19 [2023-11-19 04:54:34,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:34,822 INFO L495 AbstractCegarLoop]: Abstraction has 2868 states and 8285 transitions. [2023-11-19 04:54:34,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 04:54:34,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 8285 transitions. [2023-11-19 04:54:34,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 04:54:34,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:34,823 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:34,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 04:54:34,824 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:34,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:34,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1555963009, now seen corresponding path program 1 times [2023-11-19 04:54:34,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:34,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869263064] [2023-11-19 04:54:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:34,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:34,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:34,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869263064] [2023-11-19 04:54:34,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869263064] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:54:34,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304208545] [2023-11-19 04:54:34,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:34,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:54:34,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:54:34,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:54:34,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:54:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:35,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:54:35,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:35,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:35,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:54:35,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304208545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:35,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:54:35,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 04:54:35,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812626228] [2023-11-19 04:54:35,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:35,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:54:35,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:35,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:54:35,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:54:35,100 INFO L87 Difference]: Start difference. First operand 2868 states and 8285 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 04:54:35,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:35,254 INFO L93 Difference]: Finished difference Result 2780 states and 7900 transitions. [2023-11-19 04:54:35,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:54:35,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2023-11-19 04:54:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:35,264 INFO L225 Difference]: With dead ends: 2780 [2023-11-19 04:54:35,264 INFO L226 Difference]: Without dead ends: 2780 [2023-11-19 04:54:35,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 04:54:35,266 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 94 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:35,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 22 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:54:35,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2023-11-19 04:54:35,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2748. [2023-11-19 04:54:35,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 2708 states have (on average 2.898818316100443) internal successors, (7850), 2747 states have internal predecessors, (7850), 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 04:54:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 7850 transitions. [2023-11-19 04:54:35,340 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 7850 transitions. Word has length 20 [2023-11-19 04:54:35,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:35,340 INFO L495 AbstractCegarLoop]: Abstraction has 2748 states and 7850 transitions. [2023-11-19 04:54:35,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 04:54:35,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 7850 transitions. [2023-11-19 04:54:35,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 04:54:35,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:35,342 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:35,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:54:35,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf1cb2-4127-4c02-94c4-ebb9012395ac/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:54:35,564 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:35,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:35,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1555962960, now seen corresponding path program 1 times [2023-11-19 04:54:35,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:35,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987165155] [2023-11-19 04:54:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:35,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:54:35,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:35,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987165155] [2023-11-19 04:54:35,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987165155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:35,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:35,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:54:35,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192618905] [2023-11-19 04:54:35,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:35,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:54:35,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:35,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:54:35,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:54:35,613 INFO L87 Difference]: Start difference. First operand 2748 states and 7850 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 04:54:35,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:35,729 INFO L93 Difference]: Finished difference Result 2628 states and 7415 transitions. [2023-11-19 04:54:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:54:35,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2023-11-19 04:54:35,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:35,737 INFO L225 Difference]: With dead ends: 2628 [2023-11-19 04:54:35,737 INFO L226 Difference]: Without dead ends: 2628 [2023-11-19 04:54:35,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:54:35,738 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:35,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 11 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:54:35,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2628 states. [2023-11-19 04:54:35,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2628 to 2093. [2023-11-19 04:54:35,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2093 states, 2065 states have (on average 2.864406779661017) internal successors, (5915), 2092 states have internal predecessors, (5915), 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 04:54:35,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 5915 transitions. [2023-11-19 04:54:35,821 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 5915 transitions. Word has length 20 [2023-11-19 04:54:35,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:35,823 INFO L495 AbstractCegarLoop]: Abstraction has 2093 states and 5915 transitions. [2023-11-19 04:54:35,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 04:54:35,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 5915 transitions. [2023-11-19 04:54:35,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 04:54:35,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:35,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:35,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 04:54:35,825 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 04:54:35,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:35,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1078392536, now seen corresponding path program 1 times [2023-11-19 04:54:35,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:35,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747346248] [2023-11-19 04:54:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:35,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat