./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 cf1a7837 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_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX --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-cf1a783 [2023-11-12 00:51:54,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:51:54,806 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:51:54,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:51:54,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:51:54,839 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:51:54,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:51:54,841 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:51:54,842 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:51:54,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:51:54,843 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:51:54,844 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:51:54,845 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:51:54,845 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:51:54,846 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:51:54,847 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:51:54,847 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:51:54,848 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:51:54,849 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:51:54,849 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:51:54,850 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:51:54,850 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:51:54,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:51:54,852 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:51:54,852 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:51:54,853 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:51:54,853 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:51:54,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:51:54,854 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:51:54,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:51:54,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:51:54,856 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:51:54,856 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:51:54,857 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:51:54,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:51:54,858 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:51:54,858 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:51:54,859 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:51:54,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:51:54,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:51:54,860 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:51:54,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:51:54,861 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:51:54,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:51:54,862 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:51:54,863 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:51:54,863 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:51:54,864 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_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2023-11-12 00:51:55,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:51:55,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:51:55,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:51:55,186 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:51:55,186 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:51:55,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread/queue_longer.i [2023-11-12 00:51:58,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:51:58,597 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:51:58,598 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/sv-benchmarks/c/pthread/queue_longer.i [2023-11-12 00:51:58,620 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/data/70d64bab9/5b783fd72eae485faca27ad9f202d57c/FLAG90da85ce1 [2023-11-12 00:51:58,635 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/data/70d64bab9/5b783fd72eae485faca27ad9f202d57c [2023-11-12 00:51:58,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:51:58,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:51:58,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:51:58,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:51:58,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:51:58,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:51:58" (1/1) ... [2023-11-12 00:51:58,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73858b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:58, skipping insertion in model container [2023-11-12 00:51:58,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:51:58" (1/1) ... [2023-11-12 00:51:58,703 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:51:59,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:51:59,374 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:51:59,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:51:59,592 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:51:59,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:59 WrapperNode [2023-11-12 00:51:59,593 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:51:59,594 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:51:59,594 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:51:59,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:51:59,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:59" (1/1) ... [2023-11-12 00:51:59,638 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:59" (1/1) ... [2023-11-12 00:51:59,700 INFO L138 Inliner]: procedures = 274, calls = 63, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 269 [2023-11-12 00:51:59,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:51:59,702 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:51:59,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:51:59,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:51:59,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:59" (1/1) ... [2023-11-12 00:51:59,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:59" (1/1) ... [2023-11-12 00:51:59,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:59" (1/1) ... [2023-11-12 00:51:59,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:59" (1/1) ... [2023-11-12 00:51:59,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:59" (1/1) ... [2023-11-12 00:51:59,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:59" (1/1) ... [2023-11-12 00:51:59,763 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:59" (1/1) ... [2023-11-12 00:51:59,765 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:59" (1/1) ... [2023-11-12 00:51:59,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:51:59,771 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:51:59,771 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:51:59,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:51:59,772 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:59" (1/1) ... [2023-11-12 00:51:59,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:51:59,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:51:59,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:51:59,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:51:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-12 00:51:59,857 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-12 00:51:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-12 00:51:59,857 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-12 00:51:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:51:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:51:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:51:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:51:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 00:51:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:51:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:51:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:51:59,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:51:59,863 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:52:00,085 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:52:00,087 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:52:00,600 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:52:00,615 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:52:00,615 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:52:00,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:52:00 BoogieIcfgContainer [2023-11-12 00:52:00,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:52:00,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:52:00,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:52:00,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:52:00,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:51:58" (1/3) ... [2023-11-12 00:52:00,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f72cca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:52:00, skipping insertion in model container [2023-11-12 00:52:00,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:59" (2/3) ... [2023-11-12 00:52:00,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f72cca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:52:00, skipping insertion in model container [2023-11-12 00:52:00,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:52:00" (3/3) ... [2023-11-12 00:52:00,631 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2023-11-12 00:52:00,641 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:52:00,653 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:52:00,653 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-12 00:52:00,654 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:52:00,819 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 00:52:00,869 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:52:00,886 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 307 places, 318 transitions, 650 flow [2023-11-12 00:52:00,889 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 307 places, 318 transitions, 650 flow [2023-11-12 00:52:00,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 318 transitions, 650 flow [2023-11-12 00:52:01,059 INFO L124 PetriNetUnfolderBase]: 18/316 cut-off events. [2023-11-12 00:52:01,059 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 00:52:01,069 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. [2023-11-12 00:52:01,087 INFO L119 LiptonReduction]: Number of co-enabled transitions 25932 [2023-11-12 00:52:12,166 INFO L134 LiptonReduction]: Checked pairs total: 52886 [2023-11-12 00:52:12,167 INFO L136 LiptonReduction]: Total number of compositions: 315 [2023-11-12 00:52:12,177 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 80 transitions, 174 flow [2023-11-12 00:52:12,342 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) [2023-11-12 00:52:12,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:52:12,384 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;@2e964331, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:52:12,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-12 00:52:12,392 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) [2023-11-12 00:52:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:52:12,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:12,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:52:12,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:12,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:12,408 INFO L85 PathProgramCache]: Analyzing trace with hash -906183935, now seen corresponding path program 1 times [2023-11-12 00:52:12,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:12,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792587076] [2023-11-12 00:52:12,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:12,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:13,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:13,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792587076] [2023-11-12 00:52:13,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792587076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:13,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:13,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:52:13,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839995699] [2023-11-12 00:52:13,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:13,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:52:13,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:13,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:52:13,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:52:13,503 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) [2023-11-12 00:52:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:13,961 INFO L93 Difference]: Finished difference Result 1880 states and 4939 transitions. [2023-11-12 00:52:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:52:13,964 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 [2023-11-12 00:52:13,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:14,003 INFO L225 Difference]: With dead ends: 1880 [2023-11-12 00:52:14,004 INFO L226 Difference]: Without dead ends: 1880 [2023-11-12 00:52:14,005 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 [2023-11-12 00:52:14,010 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2023-11-12 00:52:14,015 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] [2023-11-12 00:52:14,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2023-11-12 00:52:14,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1880. [2023-11-12 00:52:14,183 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) [2023-11-12 00:52:14,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 4939 transitions. [2023-11-12 00:52:14,197 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 4939 transitions. Word has length 6 [2023-11-12 00:52:14,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:14,197 INFO L495 AbstractCegarLoop]: Abstraction has 1880 states and 4939 transitions. [2023-11-12 00:52:14,198 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) [2023-11-12 00:52:14,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 4939 transitions. [2023-11-12 00:52:14,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:52:14,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:14,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:14,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:52:14,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:14,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:14,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1973516272, now seen corresponding path program 1 times [2023-11-12 00:52:14,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:14,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682849503] [2023-11-12 00:52:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:14,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:14,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:14,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682849503] [2023-11-12 00:52:14,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682849503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:14,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:14,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:52:14,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537797083] [2023-11-12 00:52:14,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:14,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:52:14,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:14,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:52:14,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:52:14,642 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) [2023-11-12 00:52:15,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:15,128 INFO L93 Difference]: Finished difference Result 1997 states and 5242 transitions. [2023-11-12 00:52:15,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:52:15,129 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 [2023-11-12 00:52:15,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:15,150 INFO L225 Difference]: With dead ends: 1997 [2023-11-12 00:52:15,150 INFO L226 Difference]: Without dead ends: 1997 [2023-11-12 00:52:15,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:52:15,152 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 92 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:15,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 23 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:52:15,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2023-11-12 00:52:15,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1970. [2023-11-12 00:52:15,230 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) [2023-11-12 00:52:15,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 5173 transitions. [2023-11-12 00:52:15,247 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 5173 transitions. Word has length 7 [2023-11-12 00:52:15,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:15,248 INFO L495 AbstractCegarLoop]: Abstraction has 1970 states and 5173 transitions. [2023-11-12 00:52:15,249 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) [2023-11-12 00:52:15,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 5173 transitions. [2023-11-12 00:52:15,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:52:15,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:15,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:15,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:52:15,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:15,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:15,253 INFO L85 PathProgramCache]: Analyzing trace with hash 432808760, now seen corresponding path program 1 times [2023-11-12 00:52:15,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:15,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422180850] [2023-11-12 00:52:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:15,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:15,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:15,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:15,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422180850] [2023-11-12 00:52:15,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422180850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:15,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:15,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:52:15,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018758925] [2023-11-12 00:52:15,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:15,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:52:15,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:15,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:52:15,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:52:15,325 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) [2023-11-12 00:52:15,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:15,548 INFO L93 Difference]: Finished difference Result 3434 states and 9083 transitions. [2023-11-12 00:52:15,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:52:15,549 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 [2023-11-12 00:52:15,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:15,580 INFO L225 Difference]: With dead ends: 3434 [2023-11-12 00:52:15,580 INFO L226 Difference]: Without dead ends: 3434 [2023-11-12 00:52:15,580 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 [2023-11-12 00:52:15,581 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 63 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-11-12 00:52:15,582 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] [2023-11-12 00:52:15,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2023-11-12 00:52:15,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3114. [2023-11-12 00:52:15,690 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) [2023-11-12 00:52:15,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 8583 transitions. [2023-11-12 00:52:15,711 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 8583 transitions. Word has length 8 [2023-11-12 00:52:15,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:15,712 INFO L495 AbstractCegarLoop]: Abstraction has 3114 states and 8583 transitions. [2023-11-12 00:52:15,712 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) [2023-11-12 00:52:15,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 8583 transitions. [2023-11-12 00:52:15,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:52:15,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:15,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:15,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:52:15,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:15,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:15,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2040757740, now seen corresponding path program 1 times [2023-11-12 00:52:15,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:15,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842467966] [2023-11-12 00:52:15,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:15,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:16,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:16,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842467966] [2023-11-12 00:52:16,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842467966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:16,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:16,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:52:16,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546459800] [2023-11-12 00:52:16,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:16,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:52:16,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:16,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:52:16,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:52:16,052 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) [2023-11-12 00:52:16,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:16,343 INFO L93 Difference]: Finished difference Result 3111 states and 8576 transitions. [2023-11-12 00:52:16,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:52:16,344 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 [2023-11-12 00:52:16,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:16,372 INFO L225 Difference]: With dead ends: 3111 [2023-11-12 00:52:16,373 INFO L226 Difference]: Without dead ends: 3111 [2023-11-12 00:52:16,373 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 [2023-11-12 00:52:16,376 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:16,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:52:16,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2023-11-12 00:52:16,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 3111. [2023-11-12 00:52:16,486 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) [2023-11-12 00:52:16,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 8576 transitions. [2023-11-12 00:52:16,506 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 8576 transitions. Word has length 9 [2023-11-12 00:52:16,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:16,506 INFO L495 AbstractCegarLoop]: Abstraction has 3111 states and 8576 transitions. [2023-11-12 00:52:16,507 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) [2023-11-12 00:52:16,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 8576 transitions. [2023-11-12 00:52:16,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:52:16,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:16,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:16,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:52:16,510 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:16,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:16,510 INFO L85 PathProgramCache]: Analyzing trace with hash 529093977, now seen corresponding path program 1 times [2023-11-12 00:52:16,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:16,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523591348] [2023-11-12 00:52:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:16,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:16,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:16,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523591348] [2023-11-12 00:52:16,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523591348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:16,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:16,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:52:16,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222302602] [2023-11-12 00:52:16,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:16,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:52:16,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:16,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:52:16,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:52:16,614 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) [2023-11-12 00:52:16,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:16,782 INFO L93 Difference]: Finished difference Result 2873 states and 7689 transitions. [2023-11-12 00:52:16,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:52:16,783 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 [2023-11-12 00:52:16,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:16,807 INFO L225 Difference]: With dead ends: 2873 [2023-11-12 00:52:16,808 INFO L226 Difference]: Without dead ends: 2865 [2023-11-12 00:52:16,808 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 [2023-11-12 00:52:16,809 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 [2023-11-12 00:52:16,809 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] [2023-11-12 00:52:16,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2023-11-12 00:52:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2705. [2023-11-12 00:52:16,917 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) [2023-11-12 00:52:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 7441 transitions. [2023-11-12 00:52:16,941 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 7441 transitions. Word has length 9 [2023-11-12 00:52:16,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:16,942 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 7441 transitions. [2023-11-12 00:52:16,942 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) [2023-11-12 00:52:16,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 7441 transitions. [2023-11-12 00:52:16,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:52:16,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:16,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:16,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:52:16,953 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:16,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash -782113123, now seen corresponding path program 1 times [2023-11-12 00:52:16,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:16,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772477416] [2023-11-12 00:52:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:16,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:17,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:17,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772477416] [2023-11-12 00:52:17,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772477416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:17,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:17,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:52:17,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052169942] [2023-11-12 00:52:17,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:17,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:52:17,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:17,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:52:17,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:52:17,391 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) [2023-11-12 00:52:17,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:17,758 INFO L93 Difference]: Finished difference Result 2805 states and 7689 transitions. [2023-11-12 00:52:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:52:17,759 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 [2023-11-12 00:52:17,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:17,792 INFO L225 Difference]: With dead ends: 2805 [2023-11-12 00:52:17,793 INFO L226 Difference]: Without dead ends: 2805 [2023-11-12 00:52:17,794 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 [2023-11-12 00:52:17,795 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 62 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:17,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 23 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:52:17,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2023-11-12 00:52:17,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2780. [2023-11-12 00:52:17,883 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) [2023-11-12 00:52:17,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 7627 transitions. [2023-11-12 00:52:17,899 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 7627 transitions. Word has length 10 [2023-11-12 00:52:17,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:17,900 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 7627 transitions. [2023-11-12 00:52:17,901 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) [2023-11-12 00:52:17,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 7627 transitions. [2023-11-12 00:52:17,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:52:17,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:17,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:17,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:52:17,902 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:17,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:17,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1161018175, now seen corresponding path program 2 times [2023-11-12 00:52:17,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:17,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76762151] [2023-11-12 00:52:17,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:17,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:18,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:18,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76762151] [2023-11-12 00:52:18,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76762151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:18,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:18,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:52:18,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667236360] [2023-11-12 00:52:18,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:18,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:52:18,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:18,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:52:18,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:52:18,323 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) [2023-11-12 00:52:18,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:18,603 INFO L93 Difference]: Finished difference Result 2709 states and 7418 transitions. [2023-11-12 00:52:18,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:52:18,604 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 [2023-11-12 00:52:18,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:18,619 INFO L225 Difference]: With dead ends: 2709 [2023-11-12 00:52:18,619 INFO L226 Difference]: Without dead ends: 2709 [2023-11-12 00:52:18,619 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 [2023-11-12 00:52:18,620 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 93 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:18,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 18 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:52:18,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2023-11-12 00:52:18,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 2634. [2023-11-12 00:52:18,699 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) [2023-11-12 00:52:18,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 7232 transitions. [2023-11-12 00:52:18,714 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 7232 transitions. Word has length 10 [2023-11-12 00:52:18,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:18,714 INFO L495 AbstractCegarLoop]: Abstraction has 2634 states and 7232 transitions. [2023-11-12 00:52:18,714 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) [2023-11-12 00:52:18,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 7232 transitions. [2023-11-12 00:52:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:52:18,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:18,715 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:18,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:52:18,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:18,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:18,716 INFO L85 PathProgramCache]: Analyzing trace with hash 318723039, now seen corresponding path program 1 times [2023-11-12 00:52:18,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:18,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607294753] [2023-11-12 00:52:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:18,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:18,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:18,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607294753] [2023-11-12 00:52:18,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607294753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:52:18,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863698242] [2023-11-12 00:52:18,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:18,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:52:18,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:52:18,773 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:52:18,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:52:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:18,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:52:18,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:52:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:18,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:52:18,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863698242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:18,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:52:18,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-12 00:52:18,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706275697] [2023-11-12 00:52:18,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:18,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:52:18,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:18,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:52:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:52:18,959 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) [2023-11-12 00:52:19,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:19,201 INFO L93 Difference]: Finished difference Result 2770 states and 7309 transitions. [2023-11-12 00:52:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:52:19,202 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 [2023-11-12 00:52:19,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:19,214 INFO L225 Difference]: With dead ends: 2770 [2023-11-12 00:52:19,215 INFO L226 Difference]: Without dead ends: 2770 [2023-11-12 00:52:19,215 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 [2023-11-12 00:52:19,216 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 [2023-11-12 00:52:19,216 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] [2023-11-12 00:52:19,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2023-11-12 00:52:19,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2562. [2023-11-12 00:52:19,299 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) [2023-11-12 00:52:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 7001 transitions. [2023-11-12 00:52:19,310 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 7001 transitions. Word has length 11 [2023-11-12 00:52:19,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:19,310 INFO L495 AbstractCegarLoop]: Abstraction has 2562 states and 7001 transitions. [2023-11-12 00:52:19,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:52:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 7001 transitions. [2023-11-12 00:52:19,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:52:19,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:19,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:19,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:52:19,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acca2c7b-360a-4fd8-9308-fe933c2930d3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 00:52:19,520 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:19,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:19,520 INFO L85 PathProgramCache]: Analyzing trace with hash 318723129, now seen corresponding path program 1 times [2023-11-12 00:52:19,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:19,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638409048] [2023-11-12 00:52:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:19,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:52:19,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:19,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638409048] [2023-11-12 00:52:19,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638409048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:19,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:19,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:52:19,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520289544] [2023-11-12 00:52:19,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:19,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:52:19,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:19,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:52:19,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:52:19,570 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) [2023-11-12 00:52:19,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:19,767 INFO L93 Difference]: Finished difference Result 2490 states and 6770 transitions. [2023-11-12 00:52:19,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:52:19,767 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 [2023-11-12 00:52:19,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:19,778 INFO L225 Difference]: With dead ends: 2490 [2023-11-12 00:52:19,778 INFO L226 Difference]: Without dead ends: 2420 [2023-11-12 00:52:19,779 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 [2023-11-12 00:52:19,780 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:19,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 17 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:52:19,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2023-11-12 00:52:19,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 1576. [2023-11-12 00:52:19,840 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) [2023-11-12 00:52:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 4231 transitions. [2023-11-12 00:52:19,847 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 4231 transitions. Word has length 11 [2023-11-12 00:52:19,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:19,847 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 4231 transitions. [2023-11-12 00:52:19,847 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) [2023-11-12 00:52:19,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 4231 transitions. [2023-11-12 00:52:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 00:52:19,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:19,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:19,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:52:19,849 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:19,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:19,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1363611885, now seen corresponding path program 1 times [2023-11-12 00:52:19,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:19,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443072501] [2023-11-12 00:52:19,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:19,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:19,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:19,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443072501] [2023-11-12 00:52:19,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443072501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:19,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:19,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:52:19,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788615343] [2023-11-12 00:52:19,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:19,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:52:19,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:19,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:52:19,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:52:19,907 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) [2023-11-12 00:52:20,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:20,069 INFO L93 Difference]: Finished difference Result 1948 states and 5225 transitions. [2023-11-12 00:52:20,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:52:20,070 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 [2023-11-12 00:52:20,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:20,078 INFO L225 Difference]: With dead ends: 1948 [2023-11-12 00:52:20,078 INFO L226 Difference]: Without dead ends: 1948 [2023-11-12 00:52:20,079 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 [2023-11-12 00:52:20,079 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 [2023-11-12 00:52:20,080 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] [2023-11-12 00:52:20,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2023-11-12 00:52:20,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1884. [2023-11-12 00:52:20,135 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) [2023-11-12 00:52:20,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 5125 transitions. [2023-11-12 00:52:20,143 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 5125 transitions. Word has length 17 [2023-11-12 00:52:20,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:20,144 INFO L495 AbstractCegarLoop]: Abstraction has 1884 states and 5125 transitions. [2023-11-12 00:52:20,144 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) [2023-11-12 00:52:20,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 5125 transitions. [2023-11-12 00:52:20,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:52:20,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:20,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:20,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 00:52:20,146 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:20,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:20,147 INFO L85 PathProgramCache]: Analyzing trace with hash 675039878, now seen corresponding path program 1 times [2023-11-12 00:52:20,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:20,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700721223] [2023-11-12 00:52:20,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:20,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:21,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:21,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:21,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700721223] [2023-11-12 00:52:21,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700721223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:21,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:21,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-12 00:52:21,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634100378] [2023-11-12 00:52:21,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:21,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 00:52:21,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:21,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 00:52:21,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:52:21,258 INFO L87 Difference]: Start difference. First operand 1884 states and 5125 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) [2023-11-12 00:52:22,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:22,261 INFO L93 Difference]: Finished difference Result 1939 states and 5215 transitions. [2023-11-12 00:52:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:52:22,262 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 [2023-11-12 00:52:22,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:22,270 INFO L225 Difference]: With dead ends: 1939 [2023-11-12 00:52:22,270 INFO L226 Difference]: Without dead ends: 1939 [2023-11-12 00:52:22,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-11-12 00:52:22,271 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:22,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 69 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:52:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2023-11-12 00:52:22,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1883. [2023-11-12 00:52:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1831 states have (on average 2.797378481703987) internal successors, (5122), 1882 states have internal predecessors, (5122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:52:22,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 5122 transitions. [2023-11-12 00:52:22,333 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 5122 transitions. Word has length 18 [2023-11-12 00:52:22,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:22,333 INFO L495 AbstractCegarLoop]: Abstraction has 1883 states and 5122 transitions. [2023-11-12 00:52:22,333 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) [2023-11-12 00:52:22,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 5122 transitions. [2023-11-12 00:52:22,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:52:22,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:22,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:22,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 00:52:22,336 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:22,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:22,336 INFO L85 PathProgramCache]: Analyzing trace with hash 675039923, now seen corresponding path program 1 times [2023-11-12 00:52:22,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:22,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733788507] [2023-11-12 00:52:22,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:22,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:23,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:23,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733788507] [2023-11-12 00:52:23,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733788507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:23,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:23,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-12 00:52:23,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793527455] [2023-11-12 00:52:23,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:23,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 00:52:23,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:23,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 00:52:23,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:52:23,485 INFO L87 Difference]: Start difference. First operand 1883 states and 5122 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) [2023-11-12 00:52:24,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:24,560 INFO L93 Difference]: Finished difference Result 1933 states and 5203 transitions. [2023-11-12 00:52:24,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 00:52:24,561 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 [2023-11-12 00:52:24,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:24,569 INFO L225 Difference]: With dead ends: 1933 [2023-11-12 00:52:24,569 INFO L226 Difference]: Without dead ends: 1933 [2023-11-12 00:52:24,569 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 [2023-11-12 00:52:24,570 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 42 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:24,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 82 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:52:24,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2023-11-12 00:52:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1882. [2023-11-12 00:52:24,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1830 states have (on average 2.7972677595628417) internal successors, (5119), 1881 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:52:24,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 5119 transitions. [2023-11-12 00:52:24,641 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 5119 transitions. Word has length 18 [2023-11-12 00:52:24,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:24,644 INFO L495 AbstractCegarLoop]: Abstraction has 1882 states and 5119 transitions. [2023-11-12 00:52:24,644 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) [2023-11-12 00:52:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 5119 transitions. [2023-11-12 00:52:24,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 00:52:24,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:24,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:24,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 00:52:24,648 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:24,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:24,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1660557557, now seen corresponding path program 1 times [2023-11-12 00:52:24,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:24,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183352716] [2023-11-12 00:52:24,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:24,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:25,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:25,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183352716] [2023-11-12 00:52:25,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183352716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:25,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:25,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-12 00:52:25,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865612798] [2023-11-12 00:52:25,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:25,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:52:25,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:25,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:52:25,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:52:25,790 INFO L87 Difference]: Start difference. First operand 1882 states and 5119 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) [2023-11-12 00:52:26,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:26,892 INFO L93 Difference]: Finished difference Result 2293 states and 6199 transitions. [2023-11-12 00:52:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 00:52:26,893 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 [2023-11-12 00:52:26,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:26,902 INFO L225 Difference]: With dead ends: 2293 [2023-11-12 00:52:26,902 INFO L226 Difference]: Without dead ends: 2293 [2023-11-12 00:52:26,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2023-11-12 00:52:26,904 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 244 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:26,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 91 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:52:26,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2023-11-12 00:52:26,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 2182. [2023-11-12 00:52:26,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2182 states, 2130 states have (on average 2.811737089201878) internal successors, (5989), 2181 states have internal predecessors, (5989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:52:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 5989 transitions. [2023-11-12 00:52:26,973 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 5989 transitions. Word has length 19 [2023-11-12 00:52:26,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:26,974 INFO L495 AbstractCegarLoop]: Abstraction has 2182 states and 5989 transitions. [2023-11-12 00:52:26,974 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) [2023-11-12 00:52:26,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 5989 transitions. [2023-11-12 00:52:26,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 00:52:26,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:26,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:26,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 00:52:26,976 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:26,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:26,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1660557602, now seen corresponding path program 1 times [2023-11-12 00:52:26,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:26,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700654088] [2023-11-12 00:52:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:26,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:28,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:28,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700654088] [2023-11-12 00:52:28,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700654088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:28,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:28,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-12 00:52:28,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378210223] [2023-11-12 00:52:28,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:28,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:52:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:28,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:52:28,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:52:28,096 INFO L87 Difference]: Start difference. First operand 2182 states and 5989 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) [2023-11-12 00:52:29,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:29,192 INFO L93 Difference]: Finished difference Result 2293 states and 6169 transitions. [2023-11-12 00:52:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 00:52:29,196 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 [2023-11-12 00:52:29,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:29,205 INFO L225 Difference]: With dead ends: 2293 [2023-11-12 00:52:29,205 INFO L226 Difference]: Without dead ends: 2293 [2023-11-12 00:52:29,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-11-12 00:52:29,207 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 214 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:29,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 93 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:52:29,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2023-11-12 00:52:29,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 2182. [2023-11-12 00:52:29,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2182 states, 2130 states have (on average 2.7976525821596243) internal successors, (5959), 2181 states have internal predecessors, (5959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:52:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 5959 transitions. [2023-11-12 00:52:29,268 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 5959 transitions. Word has length 19 [2023-11-12 00:52:29,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:29,268 INFO L495 AbstractCegarLoop]: Abstraction has 2182 states and 5959 transitions. [2023-11-12 00:52:29,268 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) [2023-11-12 00:52:29,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 5959 transitions. [2023-11-12 00:52:29,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 00:52:29,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:29,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:29,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 00:52:29,271 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:29,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:29,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1520859021, now seen corresponding path program 2 times [2023-11-12 00:52:29,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:29,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99951052] [2023-11-12 00:52:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:29,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:30,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:30,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99951052] [2023-11-12 00:52:30,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99951052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:30,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:30,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-12 00:52:30,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489001145] [2023-11-12 00:52:30,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:30,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:52:30,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:30,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:52:30,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:52:30,471 INFO L87 Difference]: Start difference. First operand 2182 states and 5959 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) [2023-11-12 00:52:31,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:31,641 INFO L93 Difference]: Finished difference Result 2533 states and 6883 transitions. [2023-11-12 00:52:31,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:52:31,641 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 [2023-11-12 00:52:31,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:31,652 INFO L225 Difference]: With dead ends: 2533 [2023-11-12 00:52:31,652 INFO L226 Difference]: Without dead ends: 2533 [2023-11-12 00:52:31,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-11-12 00:52:31,653 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 172 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:31,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 111 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:52:31,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2023-11-12 00:52:31,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2422. [2023-11-12 00:52:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2370 states have (on average 2.8156118143459916) internal successors, (6673), 2421 states have internal predecessors, (6673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:52:31,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 6673 transitions. [2023-11-12 00:52:31,724 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 6673 transitions. Word has length 19 [2023-11-12 00:52:31,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:31,724 INFO L495 AbstractCegarLoop]: Abstraction has 2422 states and 6673 transitions. [2023-11-12 00:52:31,725 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) [2023-11-12 00:52:31,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 6673 transitions. [2023-11-12 00:52:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 00:52:31,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:31,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:31,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 00:52:31,727 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:31,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:31,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1520859066, now seen corresponding path program 2 times [2023-11-12 00:52:31,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:31,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530841015] [2023-11-12 00:52:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:31,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:32,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:32,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:32,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530841015] [2023-11-12 00:52:32,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530841015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:32,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:32,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-12 00:52:32,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589904698] [2023-11-12 00:52:32,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:32,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:52:32,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:32,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:52:32,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:52:32,831 INFO L87 Difference]: Start difference. First operand 2422 states and 6673 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) [2023-11-12 00:52:33,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:33,986 INFO L93 Difference]: Finished difference Result 2533 states and 6853 transitions. [2023-11-12 00:52:33,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 00:52:33,986 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 [2023-11-12 00:52:33,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:34,000 INFO L225 Difference]: With dead ends: 2533 [2023-11-12 00:52:34,001 INFO L226 Difference]: Without dead ends: 2533 [2023-11-12 00:52:34,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2023-11-12 00:52:34,002 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 197 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:34,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 98 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:52:34,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2023-11-12 00:52:34,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2122. [2023-11-12 00:52:34,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2070 states have (on average 2.803381642512077) internal successors, (5803), 2121 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:52:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 5803 transitions. [2023-11-12 00:52:34,084 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 5803 transitions. Word has length 19 [2023-11-12 00:52:34,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:34,084 INFO L495 AbstractCegarLoop]: Abstraction has 2122 states and 5803 transitions. [2023-11-12 00:52:34,084 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) [2023-11-12 00:52:34,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 5803 transitions. [2023-11-12 00:52:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 00:52:34,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:34,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:34,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 00:52:34,087 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:34,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:34,087 INFO L85 PathProgramCache]: Analyzing trace with hash -289051529, now seen corresponding path program 3 times [2023-11-12 00:52:34,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:34,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737220398] [2023-11-12 00:52:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:34,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:35,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:35,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737220398] [2023-11-12 00:52:35,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737220398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:35,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:35,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-12 00:52:35,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265395318] [2023-11-12 00:52:35,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:35,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:52:35,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:35,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:52:35,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:52:35,064 INFO L87 Difference]: Start difference. First operand 2122 states and 5803 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) [2023-11-12 00:52:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:36,239 INFO L93 Difference]: Finished difference Result 2353 states and 6386 transitions. [2023-11-12 00:52:36,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:52:36,240 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 [2023-11-12 00:52:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:36,249 INFO L225 Difference]: With dead ends: 2353 [2023-11-12 00:52:36,249 INFO L226 Difference]: Without dead ends: 2353 [2023-11-12 00:52:36,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2023-11-12 00:52:36,250 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 205 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:36,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 111 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:52:36,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2023-11-12 00:52:36,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 2242. [2023-11-12 00:52:36,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 2190 states have (on average 2.8168949771689498) internal successors, (6169), 2241 states have internal predecessors, (6169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:52:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 6169 transitions. [2023-11-12 00:52:36,311 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 6169 transitions. Word has length 19 [2023-11-12 00:52:36,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:36,311 INFO L495 AbstractCegarLoop]: Abstraction has 2242 states and 6169 transitions. [2023-11-12 00:52:36,311 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) [2023-11-12 00:52:36,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 6169 transitions. [2023-11-12 00:52:36,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 00:52:36,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:36,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:36,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 00:52:36,315 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:36,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:36,315 INFO L85 PathProgramCache]: Analyzing trace with hash -289051484, now seen corresponding path program 3 times [2023-11-12 00:52:36,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:36,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124920710] [2023-11-12 00:52:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:36,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:37,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:37,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:37,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124920710] [2023-11-12 00:52:37,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124920710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:37,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:37,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-12 00:52:37,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052383450] [2023-11-12 00:52:37,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:37,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:52:37,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:37,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:52:37,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:52:37,408 INFO L87 Difference]: Start difference. First operand 2242 states and 6169 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) [2023-11-12 00:52:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:38,446 INFO L93 Difference]: Finished difference Result 2353 states and 6356 transitions. [2023-11-12 00:52:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:52:38,447 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 [2023-11-12 00:52:38,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:38,457 INFO L225 Difference]: With dead ends: 2353 [2023-11-12 00:52:38,457 INFO L226 Difference]: Without dead ends: 2353 [2023-11-12 00:52:38,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2023-11-12 00:52:38,458 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 206 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:38,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 92 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:52:38,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2023-11-12 00:52:38,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 2002. [2023-11-12 00:52:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 1950 states have (on average 2.7974358974358973) internal successors, (5455), 2001 states have internal predecessors, (5455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:52:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 5455 transitions. [2023-11-12 00:52:38,514 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 5455 transitions. Word has length 19 [2023-11-12 00:52:38,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:38,514 INFO L495 AbstractCegarLoop]: Abstraction has 2002 states and 5455 transitions. [2023-11-12 00:52:38,515 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) [2023-11-12 00:52:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 5455 transitions. [2023-11-12 00:52:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 00:52:38,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:38,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:38,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 00:52:38,518 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-12 00:52:38,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:38,519 INFO L85 PathProgramCache]: Analyzing trace with hash -548240797, now seen corresponding path program 4 times [2023-11-12 00:52:38,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:38,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73446986] [2023-11-12 00:52:38,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:38,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:39,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:39,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73446986] [2023-11-12 00:52:39,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73446986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:39,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:39,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-12 00:52:39,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583816156] [2023-11-12 00:52:39,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:39,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 00:52:39,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:39,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 00:52:39,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:52:39,178 INFO L87 Difference]: Start difference. First operand 2002 states and 5455 transitions. Second operand has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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)