./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e5edd51-9794-49d1-950f-31896a4de9fa/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e5edd51-9794-49d1-950f-31896a4de9fa/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_6e5edd51-9794-49d1-950f-31896a4de9fa/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e5edd51-9794-49d1-950f-31896a4de9fa/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e5edd51-9794-49d1-950f-31896a4de9fa/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_6e5edd51-9794-49d1-950f-31896a4de9fa/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 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:42:25,398 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:42:25,507 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e5edd51-9794-49d1-950f-31896a4de9fa/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:42:25,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:42:25,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:42:25,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:42:25,560 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:42:25,561 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:42:25,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:42:25,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:42:25,567 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:42:25,568 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:42:25,568 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:42:25,570 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:42:25,570 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:42:25,571 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:42:25,571 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:42:25,572 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:42:25,572 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:42:25,573 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:42:25,573 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:42:25,574 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:42:25,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:42:25,575 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:42:25,576 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:42:25,576 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:42:25,577 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:42:25,577 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:42:25,577 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:42:25,578 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:42:25,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:42:25,580 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:42:25,580 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:42:25,580 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:42:25,581 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:42:25,581 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:42:25,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:42:25,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:42:25,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:42:25,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:42:25,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:42:25,583 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:42:25,584 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:42:25,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:42:25,585 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:42:25,585 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:42:25,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:42:25,586 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_6e5edd51-9794-49d1-950f-31896a4de9fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e5edd51-9794-49d1-950f-31896a4de9fa/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 [2023-11-12 00:42:25,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:42:25,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:42:25,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:42:25,935 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:42:25,936 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:42:25,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e5edd51-9794-49d1-950f-31896a4de9fa/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-12 00:42:29,156 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:42:29,427 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:42:29,428 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e5edd51-9794-49d1-950f-31896a4de9fa/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-12 00:42:29,437 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e5edd51-9794-49d1-950f-31896a4de9fa/bin/utaipan-verify-NcY6lQBIFX/data/690edd106/93b89a4e80ec4a9c88dc023f195c3470/FLAGc0c1a0532 [2023-11-12 00:42:29,451 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e5edd51-9794-49d1-950f-31896a4de9fa/bin/utaipan-verify-NcY6lQBIFX/data/690edd106/93b89a4e80ec4a9c88dc023f195c3470 [2023-11-12 00:42:29,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:42:29,456 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:42:29,457 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:42:29,457 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:42:29,463 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:42:29,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:42:29" (1/1) ... [2023-11-12 00:42:29,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f322ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:29, skipping insertion in model container [2023-11-12 00:42:29,465 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:42:29" (1/1) ... [2023-11-12 00:42:29,495 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:42:29,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:42:29,712 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:42:29,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:42:29,771 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:29,771 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:29,778 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:42:29,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:29 WrapperNode [2023-11-12 00:42:29,779 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:42:29,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:42:29,780 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:42:29,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:42:29,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:29" (1/1) ... [2023-11-12 00:42:29,797 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:29" (1/1) ... [2023-11-12 00:42:29,835 INFO L138 Inliner]: procedures = 22, calls = 111, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 281 [2023-11-12 00:42:29,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:42:29,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:42:29,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:42:29,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:42:29,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:29" (1/1) ... [2023-11-12 00:42:29,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:29" (1/1) ... [2023-11-12 00:42:29,852 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:29" (1/1) ... [2023-11-12 00:42:29,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:29" (1/1) ... [2023-11-12 00:42:29,874 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:29" (1/1) ... [2023-11-12 00:42:29,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:29" (1/1) ... [2023-11-12 00:42:29,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:29" (1/1) ... [2023-11-12 00:42:29,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:29" (1/1) ... [2023-11-12 00:42:29,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:42:29,886 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:42:29,886 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:42:29,886 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:42:29,887 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:29" (1/1) ... [2023-11-12 00:42:29,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:42:29,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e5edd51-9794-49d1-950f-31896a4de9fa/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:42:29,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e5edd51-9794-49d1-950f-31896a4de9fa/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:42:29,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e5edd51-9794-49d1-950f-31896a4de9fa/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:42:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:42:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 00:42:29,974 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 00:42:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 00:42:29,974 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 00:42:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 00:42:29,975 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 00:42:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:42:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:42:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:42:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 00:42:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 00:42:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:42:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:42:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:42:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:42:29,978 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 00:42:30,085 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:42:30,087 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:42:30,529 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:42:30,757 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:42:30,757 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:42:30,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:42:30 BoogieIcfgContainer [2023-11-12 00:42:30,762 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:42:30,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:42:30,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:42:30,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:42:30,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:42:29" (1/3) ... [2023-11-12 00:42:30,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:42:30, skipping insertion in model container [2023-11-12 00:42:30,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:29" (2/3) ... [2023-11-12 00:42:30,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:42:30, skipping insertion in model container [2023-11-12 00:42:30,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:42:30" (3/3) ... [2023-11-12 00:42:30,774 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-11-12 00:42:30,784 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:42:30,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:42:30,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-12 00:42:30,795 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:42:30,922 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 00:42:30,962 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:42:30,978 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 175 transitions, 371 flow [2023-11-12 00:42:30,981 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 175 transitions, 371 flow [2023-11-12 00:42:30,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 175 transitions, 371 flow [2023-11-12 00:42:31,113 INFO L124 PetriNetUnfolderBase]: 2/172 cut-off events. [2023-11-12 00:42:31,114 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 00:42:31,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 172 events. 2/172 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 170 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2023-11-12 00:42:31,123 INFO L119 LiptonReduction]: Number of co-enabled transitions 3534 [2023-11-12 00:42:37,547 INFO L134 LiptonReduction]: Checked pairs total: 24668 [2023-11-12 00:42:37,548 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-11-12 00:42:37,557 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 58 transitions, 137 flow [2023-11-12 00:42:37,946 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7684 states, 7557 states have (on average 3.292973402143708) internal successors, (24885), 7683 states have internal predecessors, (24885), 0 states have call successors, (0), 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 00:42:37,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:42:37,977 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;@2e55716e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:42:37,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-12 00:42:38,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 7684 states, 7557 states have (on average 3.292973402143708) internal successors, (24885), 7683 states have internal predecessors, (24885), 0 states have call successors, (0), 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 00:42:38,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:42:38,013 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:38,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:42:38,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:38,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:38,020 INFO L85 PathProgramCache]: Analyzing trace with hash 26116723, now seen corresponding path program 1 times [2023-11-12 00:42:38,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:38,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829463305] [2023-11-12 00:42:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:38,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:38,620 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 00:42:38,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:38,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829463305] [2023-11-12 00:42:38,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829463305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:38,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:38,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:42:38,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821655116] [2023-11-12 00:42:38,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:38,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:42:38,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:38,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:42:38,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:42:38,680 INFO L87 Difference]: Start difference. First operand has 7684 states, 7557 states have (on average 3.292973402143708) internal successors, (24885), 7683 states have internal predecessors, (24885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 00:42:39,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:39,106 INFO L93 Difference]: Finished difference Result 7672 states and 24863 transitions. [2023-11-12 00:42:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:42:39,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2023-11-12 00:42:39,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:39,209 INFO L225 Difference]: With dead ends: 7672 [2023-11-12 00:42:39,210 INFO L226 Difference]: Without dead ends: 7622 [2023-11-12 00:42:39,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:42:39,214 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:39,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 9 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:42:39,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7622 states. [2023-11-12 00:42:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7622 to 7502. [2023-11-12 00:42:39,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7502 states, 7386 states have (on average 3.287029515299215) internal successors, (24278), 7501 states have internal predecessors, (24278), 0 states have call successors, (0), 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 00:42:39,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7502 states to 7502 states and 24278 transitions. [2023-11-12 00:42:39,743 INFO L78 Accepts]: Start accepts. Automaton has 7502 states and 24278 transitions. Word has length 4 [2023-11-12 00:42:39,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:39,744 INFO L495 AbstractCegarLoop]: Abstraction has 7502 states and 24278 transitions. [2023-11-12 00:42:39,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 00:42:39,745 INFO L276 IsEmpty]: Start isEmpty. Operand 7502 states and 24278 transitions. [2023-11-12 00:42:39,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:42:39,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:39,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:39,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:42:39,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:39,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:39,748 INFO L85 PathProgramCache]: Analyzing trace with hash 366554630, now seen corresponding path program 1 times [2023-11-12 00:42:39,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:39,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135656285] [2023-11-12 00:42:39,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:39,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:40,085 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 00:42:40,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:40,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135656285] [2023-11-12 00:42:40,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135656285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:40,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:40,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:42:40,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14297155] [2023-11-12 00:42:40,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:40,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:42:40,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:40,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:42:40,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:42:40,091 INFO L87 Difference]: Start difference. First operand 7502 states and 24278 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:40,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:40,346 INFO L93 Difference]: Finished difference Result 7718 states and 24986 transitions. [2023-11-12 00:42:40,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:42:40,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-12 00:42:40,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:40,548 INFO L225 Difference]: With dead ends: 7718 [2023-11-12 00:42:40,556 INFO L226 Difference]: Without dead ends: 7718 [2023-11-12 00:42:40,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:42:40,558 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:40,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 7 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:42:40,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7718 states. [2023-11-12 00:42:40,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7718 to 7684. [2023-11-12 00:42:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7684 states, 7568 states have (on average 3.2880549682875264) internal successors, (24884), 7683 states have internal predecessors, (24884), 0 states have call successors, (0), 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 00:42:40,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7684 states to 7684 states and 24884 transitions. [2023-11-12 00:42:40,920 INFO L78 Accepts]: Start accepts. Automaton has 7684 states and 24884 transitions. Word has length 9 [2023-11-12 00:42:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:40,921 INFO L495 AbstractCegarLoop]: Abstraction has 7684 states and 24884 transitions. [2023-11-12 00:42:40,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:40,921 INFO L276 IsEmpty]: Start isEmpty. Operand 7684 states and 24884 transitions. [2023-11-12 00:42:40,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:42:40,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:40,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:40,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:42:40,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:40,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:40,928 INFO L85 PathProgramCache]: Analyzing trace with hash 362238500, now seen corresponding path program 2 times [2023-11-12 00:42:40,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:40,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30970438] [2023-11-12 00:42:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:40,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:41,354 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 00:42:41,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:41,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30970438] [2023-11-12 00:42:41,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30970438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:41,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:41,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:42:41,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813617113] [2023-11-12 00:42:41,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:41,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:42:41,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:41,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:42:41,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:41,360 INFO L87 Difference]: Start difference. First operand 7684 states and 24884 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 00:42:41,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:41,793 INFO L93 Difference]: Finished difference Result 8330 states and 27434 transitions. [2023-11-12 00:42:41,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:42:41,794 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 00:42:41,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:41,850 INFO L225 Difference]: With dead ends: 8330 [2023-11-12 00:42:41,850 INFO L226 Difference]: Without dead ends: 8330 [2023-11-12 00:42:41,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:41,854 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 44 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:41,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 14 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:42:41,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8330 states. [2023-11-12 00:42:42,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8330 to 8022. [2023-11-12 00:42:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8022 states, 7906 states have (on average 3.34454844421958) internal successors, (26442), 8021 states have internal predecessors, (26442), 0 states have call successors, (0), 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 00:42:42,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8022 states to 8022 states and 26442 transitions. [2023-11-12 00:42:42,283 INFO L78 Accepts]: Start accepts. Automaton has 8022 states and 26442 transitions. Word has length 9 [2023-11-12 00:42:42,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:42,284 INFO L495 AbstractCegarLoop]: Abstraction has 8022 states and 26442 transitions. [2023-11-12 00:42:42,285 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 00:42:42,285 INFO L276 IsEmpty]: Start isEmpty. Operand 8022 states and 26442 transitions. [2023-11-12 00:42:42,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:42:42,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:42,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:42,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:42:42,288 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:42,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:42,289 INFO L85 PathProgramCache]: Analyzing trace with hash 362238501, now seen corresponding path program 1 times [2023-11-12 00:42:42,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:42,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284550611] [2023-11-12 00:42:42,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:42,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:42,681 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 00:42:42,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:42,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284550611] [2023-11-12 00:42:42,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284550611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:42,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:42,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:42:42,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151045873] [2023-11-12 00:42:42,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:42,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:42:42,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:42,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:42:42,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:42,693 INFO L87 Difference]: Start difference. First operand 8022 states and 26442 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 00:42:43,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:43,014 INFO L93 Difference]: Finished difference Result 8820 states and 28852 transitions. [2023-11-12 00:42:43,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:42:43,015 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 00:42:43,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:43,067 INFO L225 Difference]: With dead ends: 8820 [2023-11-12 00:42:43,067 INFO L226 Difference]: Without dead ends: 8820 [2023-11-12 00:42:43,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:43,071 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 44 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:43,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 14 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:42:43,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8820 states. [2023-11-12 00:42:43,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8820 to 8126. [2023-11-12 00:42:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8126 states, 8010 states have (on average 3.324843945068664) internal successors, (26632), 8125 states have internal predecessors, (26632), 0 states have call successors, (0), 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 00:42:43,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8126 states to 8126 states and 26632 transitions. [2023-11-12 00:42:43,535 INFO L78 Accepts]: Start accepts. Automaton has 8126 states and 26632 transitions. Word has length 9 [2023-11-12 00:42:43,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:43,535 INFO L495 AbstractCegarLoop]: Abstraction has 8126 states and 26632 transitions. [2023-11-12 00:42:43,535 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 00:42:43,536 INFO L276 IsEmpty]: Start isEmpty. Operand 8126 states and 26632 transitions. [2023-11-12 00:42:43,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:42:43,543 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:43,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:43,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:42:43,544 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:43,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:43,544 INFO L85 PathProgramCache]: Analyzing trace with hash -290960649, now seen corresponding path program 1 times [2023-11-12 00:42:43,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:43,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948035990] [2023-11-12 00:42:43,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:43,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:43,612 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 00:42:43,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:43,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948035990] [2023-11-12 00:42:43,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948035990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:43,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:43,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:42:43,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490159619] [2023-11-12 00:42:43,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:43,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:42:43,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:43,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:42:43,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:42:43,615 INFO L87 Difference]: Start difference. First operand 8126 states and 26632 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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 00:42:43,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:43,867 INFO L93 Difference]: Finished difference Result 6130 states and 19616 transitions. [2023-11-12 00:42:43,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:42:43,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) 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 00:42:43,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:43,898 INFO L225 Difference]: With dead ends: 6130 [2023-11-12 00:42:43,899 INFO L226 Difference]: Without dead ends: 6130 [2023-11-12 00:42:43,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:42:43,900 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 29 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:43,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 6 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:42:43,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2023-11-12 00:42:44,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 6130. [2023-11-12 00:42:44,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6130 states, 6070 states have (on average 3.23163097199341) internal successors, (19616), 6129 states have internal predecessors, (19616), 0 states have call successors, (0), 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 00:42:44,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6130 states to 6130 states and 19616 transitions. [2023-11-12 00:42:44,093 INFO L78 Accepts]: Start accepts. Automaton has 6130 states and 19616 transitions. Word has length 9 [2023-11-12 00:42:44,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:44,093 INFO L495 AbstractCegarLoop]: Abstraction has 6130 states and 19616 transitions. [2023-11-12 00:42:44,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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 00:42:44,098 INFO L276 IsEmpty]: Start isEmpty. Operand 6130 states and 19616 transitions. [2023-11-12 00:42:44,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:42:44,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:44,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:44,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:42:44,100 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:44,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:44,101 INFO L85 PathProgramCache]: Analyzing trace with hash 385380297, now seen corresponding path program 1 times [2023-11-12 00:42:44,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:44,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454451405] [2023-11-12 00:42:44,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:44,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:44,325 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 00:42:44,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:44,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454451405] [2023-11-12 00:42:44,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454451405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:44,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:44,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:42:44,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268441613] [2023-11-12 00:42:44,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:44,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:42:44,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:44,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:42:44,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:44,328 INFO L87 Difference]: Start difference. First operand 6130 states and 19616 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 00:42:44,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:44,654 INFO L93 Difference]: Finished difference Result 6814 states and 21990 transitions. [2023-11-12 00:42:44,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:42:44,655 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 00:42:44,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:44,702 INFO L225 Difference]: With dead ends: 6814 [2023-11-12 00:42:44,702 INFO L226 Difference]: Without dead ends: 6814 [2023-11-12 00:42:44,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:44,703 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 37 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:44,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 14 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:42:44,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6814 states. [2023-11-12 00:42:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6814 to 6336. [2023-11-12 00:42:44,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6336 states, 6276 states have (on average 3.258763543658381) internal successors, (20452), 6335 states have internal predecessors, (20452), 0 states have call successors, (0), 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 00:42:44,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 20452 transitions. [2023-11-12 00:42:44,970 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 20452 transitions. Word has length 9 [2023-11-12 00:42:44,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:44,971 INFO L495 AbstractCegarLoop]: Abstraction has 6336 states and 20452 transitions. [2023-11-12 00:42:44,971 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 00:42:44,971 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 20452 transitions. [2023-11-12 00:42:44,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:42:44,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:44,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:44,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:42:44,973 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:44,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash 925226259, now seen corresponding path program 1 times [2023-11-12 00:42:44,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:44,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074624674] [2023-11-12 00:42:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:44,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:45,170 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 00:42:45,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:45,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074624674] [2023-11-12 00:42:45,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074624674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:45,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:45,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:42:45,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730879536] [2023-11-12 00:42:45,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:45,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:42:45,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:45,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:42:45,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:45,173 INFO L87 Difference]: Start difference. First operand 6336 states and 20452 transitions. Second operand has 5 states, 4 states have (on average 2.75) 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 00:42:45,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:45,436 INFO L93 Difference]: Finished difference Result 6918 states and 22519 transitions. [2023-11-12 00:42:45,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:42:45,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) 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 00:42:45,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:45,468 INFO L225 Difference]: With dead ends: 6918 [2023-11-12 00:42:45,469 INFO L226 Difference]: Without dead ends: 6918 [2023-11-12 00:42:45,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:45,470 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 43 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:45,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 12 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:42:45,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6918 states. [2023-11-12 00:42:45,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6918 to 6690. [2023-11-12 00:42:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6690 states, 6630 states have (on average 3.2924585218702864) internal successors, (21829), 6689 states have internal predecessors, (21829), 0 states have call successors, (0), 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 00:42:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6690 states to 6690 states and 21829 transitions. [2023-11-12 00:42:45,761 INFO L78 Accepts]: Start accepts. Automaton has 6690 states and 21829 transitions. Word has length 11 [2023-11-12 00:42:45,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:45,761 INFO L495 AbstractCegarLoop]: Abstraction has 6690 states and 21829 transitions. [2023-11-12 00:42:45,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) 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 00:42:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 6690 states and 21829 transitions. [2023-11-12 00:42:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:42:45,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:45,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:45,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:42:45,764 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:45,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:45,764 INFO L85 PathProgramCache]: Analyzing trace with hash 925226260, now seen corresponding path program 1 times [2023-11-12 00:42:45,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:45,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023335335] [2023-11-12 00:42:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:45,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:42:45,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:45,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023335335] [2023-11-12 00:42:45,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023335335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:45,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:45,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:42:45,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209772] [2023-11-12 00:42:45,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:45,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:42:45,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:45,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:42:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:45,950 INFO L87 Difference]: Start difference. First operand 6690 states and 21829 transitions. Second operand has 5 states, 4 states have (on average 2.75) 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 00:42:46,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:46,213 INFO L93 Difference]: Finished difference Result 6918 states and 22339 transitions. [2023-11-12 00:42:46,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:42:46,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) 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 00:42:46,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:46,246 INFO L225 Difference]: With dead ends: 6918 [2023-11-12 00:42:46,246 INFO L226 Difference]: Without dead ends: 6918 [2023-11-12 00:42:46,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:46,249 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 39 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:46,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 15 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:42:46,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6918 states. [2023-11-12 00:42:46,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6918 to 6690. [2023-11-12 00:42:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6690 states, 6630 states have (on average 3.265309200603318) internal successors, (21649), 6689 states have internal predecessors, (21649), 0 states have call successors, (0), 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 00:42:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6690 states to 6690 states and 21649 transitions. [2023-11-12 00:42:46,450 INFO L78 Accepts]: Start accepts. Automaton has 6690 states and 21649 transitions. Word has length 11 [2023-11-12 00:42:46,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:46,450 INFO L495 AbstractCegarLoop]: Abstraction has 6690 states and 21649 transitions. [2023-11-12 00:42:46,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) 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 00:42:46,451 INFO L276 IsEmpty]: Start isEmpty. Operand 6690 states and 21649 transitions. [2023-11-12 00:42:46,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:42:46,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:46,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:46,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:42:46,456 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:46,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:46,457 INFO L85 PathProgramCache]: Analyzing trace with hash 921260993, now seen corresponding path program 1 times [2023-11-12 00:42:46,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:46,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321799868] [2023-11-12 00:42:46,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:46,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:46,641 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 00:42:46,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:46,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321799868] [2023-11-12 00:42:46,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321799868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:46,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:46,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:42:46,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872367528] [2023-11-12 00:42:46,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:46,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:42:46,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:46,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:42:46,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:46,643 INFO L87 Difference]: Start difference. First operand 6690 states and 21649 transitions. Second operand has 5 states, 4 states have (on average 2.75) 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 00:42:46,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:46,976 INFO L93 Difference]: Finished difference Result 7240 states and 23779 transitions. [2023-11-12 00:42:46,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:42:46,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) 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 00:42:46,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:47,012 INFO L225 Difference]: With dead ends: 7240 [2023-11-12 00:42:47,012 INFO L226 Difference]: Without dead ends: 7240 [2023-11-12 00:42:47,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:47,013 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 38 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:47,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 15 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:42:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2023-11-12 00:42:47,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 7002. [2023-11-12 00:42:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7002 states, 6942 states have (on average 3.3151829443964274) internal successors, (23014), 7001 states have internal predecessors, (23014), 0 states have call successors, (0), 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 00:42:47,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7002 states to 7002 states and 23014 transitions. [2023-11-12 00:42:47,226 INFO L78 Accepts]: Start accepts. Automaton has 7002 states and 23014 transitions. Word has length 11 [2023-11-12 00:42:47,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:47,227 INFO L495 AbstractCegarLoop]: Abstraction has 7002 states and 23014 transitions. [2023-11-12 00:42:47,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) 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 00:42:47,227 INFO L276 IsEmpty]: Start isEmpty. Operand 7002 states and 23014 transitions. [2023-11-12 00:42:47,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:42:47,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:47,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:47,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:42:47,229 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:47,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:47,229 INFO L85 PathProgramCache]: Analyzing trace with hash 921260994, now seen corresponding path program 1 times [2023-11-12 00:42:47,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:47,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784475271] [2023-11-12 00:42:47,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:47,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:47,467 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 00:42:47,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:47,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784475271] [2023-11-12 00:42:47,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784475271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:47,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:47,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:42:47,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002994777] [2023-11-12 00:42:47,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:47,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:42:47,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:47,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:42:47,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:47,471 INFO L87 Difference]: Start difference. First operand 7002 states and 23014 transitions. Second operand has 5 states, 4 states have (on average 2.75) 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 00:42:47,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:47,747 INFO L93 Difference]: Finished difference Result 7470 states and 24401 transitions. [2023-11-12 00:42:47,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:42:47,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) 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 00:42:47,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:47,776 INFO L225 Difference]: With dead ends: 7470 [2023-11-12 00:42:47,776 INFO L226 Difference]: Without dead ends: 7470 [2023-11-12 00:42:47,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:47,777 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 38 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:47,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 15 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:42:47,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7470 states. [2023-11-12 00:42:47,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7470 to 7108. [2023-11-12 00:42:47,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7108 states, 7048 states have (on average 3.292849035187287) internal successors, (23208), 7107 states have internal predecessors, (23208), 0 states have call successors, (0), 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 00:42:47,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 23208 transitions. [2023-11-12 00:42:47,990 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 23208 transitions. Word has length 11 [2023-11-12 00:42:47,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:47,990 INFO L495 AbstractCegarLoop]: Abstraction has 7108 states and 23208 transitions. [2023-11-12 00:42:47,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) 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 00:42:47,991 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 23208 transitions. [2023-11-12 00:42:47,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:42:47,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:47,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:47,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 00:42:47,992 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:47,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:47,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1109342782, now seen corresponding path program 1 times [2023-11-12 00:42:47,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:47,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305948118] [2023-11-12 00:42:47,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:47,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:48,164 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 00:42:48,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:48,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305948118] [2023-11-12 00:42:48,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305948118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:48,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:48,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:42:48,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901115445] [2023-11-12 00:42:48,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:48,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:42:48,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:42:48,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:48,167 INFO L87 Difference]: Start difference. First operand 7108 states and 23208 transitions. Second operand has 5 states, 4 states have (on average 2.75) 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 00:42:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:48,486 INFO L93 Difference]: Finished difference Result 7564 states and 24657 transitions. [2023-11-12 00:42:48,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:42:48,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) 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 00:42:48,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:48,519 INFO L225 Difference]: With dead ends: 7564 [2023-11-12 00:42:48,519 INFO L226 Difference]: Without dead ends: 7564 [2023-11-12 00:42:48,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:48,520 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:48,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 15 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:42:48,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7564 states. [2023-11-12 00:42:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7564 to 7136. [2023-11-12 00:42:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7136 states, 7080 states have (on average 3.284463276836158) internal successors, (23254), 7135 states have internal predecessors, (23254), 0 states have call successors, (0), 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 00:42:48,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7136 states to 7136 states and 23254 transitions. [2023-11-12 00:42:48,792 INFO L78 Accepts]: Start accepts. Automaton has 7136 states and 23254 transitions. Word has length 11 [2023-11-12 00:42:48,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:48,792 INFO L495 AbstractCegarLoop]: Abstraction has 7136 states and 23254 transitions. [2023-11-12 00:42:48,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) 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 00:42:48,793 INFO L276 IsEmpty]: Start isEmpty. Operand 7136 states and 23254 transitions. [2023-11-12 00:42:48,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:42:48,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:48,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:48,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 00:42:48,795 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:48,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:48,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1505665878, now seen corresponding path program 1 times [2023-11-12 00:42:48,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:48,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727138984] [2023-11-12 00:42:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:48,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:49,032 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 00:42:49,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:49,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727138984] [2023-11-12 00:42:49,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727138984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:49,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:49,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:42:49,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115238002] [2023-11-12 00:42:49,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:49,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:42:49,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:49,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:42:49,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:49,035 INFO L87 Difference]: Start difference. First operand 7136 states and 23254 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:49,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:49,382 INFO L93 Difference]: Finished difference Result 7330 states and 23903 transitions. [2023-11-12 00:42:49,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:42:49,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-12 00:42:49,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:49,408 INFO L225 Difference]: With dead ends: 7330 [2023-11-12 00:42:49,408 INFO L226 Difference]: Without dead ends: 7330 [2023-11-12 00:42:49,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:49,409 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:49,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 22 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:42:49,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7330 states. [2023-11-12 00:42:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7330 to 7226. [2023-11-12 00:42:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7226 states, 7170 states have (on average 3.295118549511855) internal successors, (23626), 7225 states have internal predecessors, (23626), 0 states have call successors, (0), 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 00:42:49,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7226 states to 7226 states and 23626 transitions. [2023-11-12 00:42:49,686 INFO L78 Accepts]: Start accepts. Automaton has 7226 states and 23626 transitions. Word has length 12 [2023-11-12 00:42:49,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:49,686 INFO L495 AbstractCegarLoop]: Abstraction has 7226 states and 23626 transitions. [2023-11-12 00:42:49,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 7226 states and 23626 transitions. [2023-11-12 00:42:49,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:42:49,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:49,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:49,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 00:42:49,689 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:49,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:49,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1505665877, now seen corresponding path program 1 times [2023-11-12 00:42:49,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:49,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753093020] [2023-11-12 00:42:49,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:49,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:42:49,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:49,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753093020] [2023-11-12 00:42:49,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753093020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:49,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:49,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:42:49,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55338358] [2023-11-12 00:42:49,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:49,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:42:49,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:49,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:42:49,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:49,950 INFO L87 Difference]: Start difference. First operand 7226 states and 23626 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:50,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:50,331 INFO L93 Difference]: Finished difference Result 9362 states and 30527 transitions. [2023-11-12 00:42:50,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:42:50,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-12 00:42:50,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:50,362 INFO L225 Difference]: With dead ends: 9362 [2023-11-12 00:42:50,362 INFO L226 Difference]: Without dead ends: 9362 [2023-11-12 00:42:50,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:50,363 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 52 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:50,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 26 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:42:50,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9362 states. [2023-11-12 00:42:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9362 to 7578. [2023-11-12 00:42:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7578 states, 7522 states have (on average 3.3180005317734644) internal successors, (24958), 7577 states have internal predecessors, (24958), 0 states have call successors, (0), 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 00:42:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7578 states to 7578 states and 24958 transitions. [2023-11-12 00:42:50,764 INFO L78 Accepts]: Start accepts. Automaton has 7578 states and 24958 transitions. Word has length 12 [2023-11-12 00:42:50,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:50,767 INFO L495 AbstractCegarLoop]: Abstraction has 7578 states and 24958 transitions. [2023-11-12 00:42:50,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 7578 states and 24958 transitions. [2023-11-12 00:42:50,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:42:50,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:50,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:50,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 00:42:50,769 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:50,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:50,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1505677968, now seen corresponding path program 2 times [2023-11-12 00:42:50,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:50,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572045086] [2023-11-12 00:42:50,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:50,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:51,004 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 00:42:51,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:51,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572045086] [2023-11-12 00:42:51,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572045086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:51,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:51,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:42:51,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281090386] [2023-11-12 00:42:51,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:51,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:42:51,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:51,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:42:51,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:51,007 INFO L87 Difference]: Start difference. First operand 7578 states and 24958 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:51,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:51,335 INFO L93 Difference]: Finished difference Result 7562 states and 24872 transitions. [2023-11-12 00:42:51,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:42:51,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-12 00:42:51,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:51,354 INFO L225 Difference]: With dead ends: 7562 [2023-11-12 00:42:51,354 INFO L226 Difference]: Without dead ends: 7562 [2023-11-12 00:42:51,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:51,355 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 31 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:51,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 23 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:42:51,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7562 states. [2023-11-12 00:42:51,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7562 to 7500. [2023-11-12 00:42:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7500 states, 7444 states have (on average 3.3162278344975817) internal successors, (24686), 7499 states have internal predecessors, (24686), 0 states have call successors, (0), 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 00:42:51,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7500 states to 7500 states and 24686 transitions. [2023-11-12 00:42:51,558 INFO L78 Accepts]: Start accepts. Automaton has 7500 states and 24686 transitions. Word has length 12 [2023-11-12 00:42:51,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:51,558 INFO L495 AbstractCegarLoop]: Abstraction has 7500 states and 24686 transitions. [2023-11-12 00:42:51,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:51,559 INFO L276 IsEmpty]: Start isEmpty. Operand 7500 states and 24686 transitions. [2023-11-12 00:42:51,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:42:51,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:51,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:51,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 00:42:51,561 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:51,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:51,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1505677967, now seen corresponding path program 2 times [2023-11-12 00:42:51,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:51,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264312489] [2023-11-12 00:42:51,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:51,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:51,797 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 00:42:51,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:51,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264312489] [2023-11-12 00:42:51,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264312489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:51,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:51,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:42:51,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058870258] [2023-11-12 00:42:51,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:51,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:42:51,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:51,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:42:51,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:51,800 INFO L87 Difference]: Start difference. First operand 7500 states and 24686 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:52,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:52,149 INFO L93 Difference]: Finished difference Result 9468 states and 31075 transitions. [2023-11-12 00:42:52,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:42:52,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-12 00:42:52,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:52,173 INFO L225 Difference]: With dead ends: 9468 [2023-11-12 00:42:52,173 INFO L226 Difference]: Without dead ends: 9468 [2023-11-12 00:42:52,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:52,174 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 50 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:52,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 28 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:42:52,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9468 states. [2023-11-12 00:42:52,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9468 to 7368. [2023-11-12 00:42:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7368 states, 7312 states have (on average 3.3059354485776806) internal successors, (24173), 7367 states have internal predecessors, (24173), 0 states have call successors, (0), 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 00:42:52,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7368 states to 7368 states and 24173 transitions. [2023-11-12 00:42:52,456 INFO L78 Accepts]: Start accepts. Automaton has 7368 states and 24173 transitions. Word has length 12 [2023-11-12 00:42:52,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:52,456 INFO L495 AbstractCegarLoop]: Abstraction has 7368 states and 24173 transitions. [2023-11-12 00:42:52,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:52,457 INFO L276 IsEmpty]: Start isEmpty. Operand 7368 states and 24173 transitions. [2023-11-12 00:42:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:42:52,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:52,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:52,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 00:42:52,459 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:52,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:52,460 INFO L85 PathProgramCache]: Analyzing trace with hash 477751699, now seen corresponding path program 1 times [2023-11-12 00:42:52,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:52,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014047122] [2023-11-12 00:42:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:52,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:52,660 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 00:42:52,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:52,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014047122] [2023-11-12 00:42:52,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014047122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:52,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:52,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:42:52,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313259472] [2023-11-12 00:42:52,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:52,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:42:52,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:52,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:42:52,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:52,663 INFO L87 Difference]: Start difference. First operand 7368 states and 24173 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:52,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:52,906 INFO L93 Difference]: Finished difference Result 8008 states and 26054 transitions. [2023-11-12 00:42:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:42:52,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-12 00:42:52,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:52,939 INFO L225 Difference]: With dead ends: 8008 [2023-11-12 00:42:52,939 INFO L226 Difference]: Without dead ends: 8008 [2023-11-12 00:42:52,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:52,940 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 53 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:52,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 13 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:42:52,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8008 states. [2023-11-12 00:42:53,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8008 to 7496. [2023-11-12 00:42:53,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 7440 states have (on average 3.2731182795698923) internal successors, (24352), 7495 states have internal predecessors, (24352), 0 states have call successors, (0), 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 00:42:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 24352 transitions. [2023-11-12 00:42:53,210 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 24352 transitions. Word has length 12 [2023-11-12 00:42:53,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:53,211 INFO L495 AbstractCegarLoop]: Abstraction has 7496 states and 24352 transitions. [2023-11-12 00:42:53,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:53,211 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 24352 transitions. [2023-11-12 00:42:53,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:42:53,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:53,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:53,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 00:42:53,216 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:53,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:53,217 INFO L85 PathProgramCache]: Analyzing trace with hash 477766572, now seen corresponding path program 1 times [2023-11-12 00:42:53,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:53,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850718627] [2023-11-12 00:42:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:53,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:42:53,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:53,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850718627] [2023-11-12 00:42:53,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850718627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:53,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:53,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:42:53,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019151600] [2023-11-12 00:42:53,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:53,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:42:53,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:53,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:42:53,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:53,450 INFO L87 Difference]: Start difference. First operand 7496 states and 24352 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:53,829 INFO L93 Difference]: Finished difference Result 7812 states and 25416 transitions. [2023-11-12 00:42:53,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:42:53,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-12 00:42:53,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:53,856 INFO L225 Difference]: With dead ends: 7812 [2023-11-12 00:42:53,856 INFO L226 Difference]: Without dead ends: 7812 [2023-11-12 00:42:53,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:53,857 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 56 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:53,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 25 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:42:53,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7812 states. [2023-11-12 00:42:53,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7812 to 7412. [2023-11-12 00:42:53,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7412 states, 7358 states have (on average 3.2688230497417776) internal successors, (24052), 7411 states have internal predecessors, (24052), 0 states have call successors, (0), 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 00:42:54,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7412 states to 7412 states and 24052 transitions. [2023-11-12 00:42:54,121 INFO L78 Accepts]: Start accepts. Automaton has 7412 states and 24052 transitions. Word has length 12 [2023-11-12 00:42:54,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:54,121 INFO L495 AbstractCegarLoop]: Abstraction has 7412 states and 24052 transitions. [2023-11-12 00:42:54,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:54,121 INFO L276 IsEmpty]: Start isEmpty. Operand 7412 states and 24052 transitions. [2023-11-12 00:42:54,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:42:54,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:54,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:54,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 00:42:54,123 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:54,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash 477766573, now seen corresponding path program 1 times [2023-11-12 00:42:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:54,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242218124] [2023-11-12 00:42:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:54,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:54,309 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 00:42:54,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:54,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242218124] [2023-11-12 00:42:54,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242218124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:54,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:54,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:42:54,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458902285] [2023-11-12 00:42:54,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:54,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:42:54,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:54,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:42:54,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:54,312 INFO L87 Difference]: Start difference. First operand 7412 states and 24052 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:54,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:54,640 INFO L93 Difference]: Finished difference Result 10160 states and 33239 transitions. [2023-11-12 00:42:54,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:42:54,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-12 00:42:54,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:54,675 INFO L225 Difference]: With dead ends: 10160 [2023-11-12 00:42:54,675 INFO L226 Difference]: Without dead ends: 10160 [2023-11-12 00:42:54,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:54,676 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 85 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:54,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 19 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:42:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10160 states. [2023-11-12 00:42:54,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10160 to 7520. [2023-11-12 00:42:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7520 states, 7466 states have (on average 3.284489686579159) internal successors, (24522), 7519 states have internal predecessors, (24522), 0 states have call successors, (0), 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 00:42:54,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 24522 transitions. [2023-11-12 00:42:54,868 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 24522 transitions. Word has length 12 [2023-11-12 00:42:54,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:54,869 INFO L495 AbstractCegarLoop]: Abstraction has 7520 states and 24522 transitions. [2023-11-12 00:42:54,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:54,869 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 24522 transitions. [2023-11-12 00:42:54,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:42:54,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:54,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:54,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 00:42:54,871 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:54,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:54,872 INFO L85 PathProgramCache]: Analyzing trace with hash 477766579, now seen corresponding path program 2 times [2023-11-12 00:42:54,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:54,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327052079] [2023-11-12 00:42:54,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:54,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:55,112 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 00:42:55,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:55,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327052079] [2023-11-12 00:42:55,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327052079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:55,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:55,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:42:55,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365834619] [2023-11-12 00:42:55,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:55,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:42:55,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:55,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:42:55,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:55,115 INFO L87 Difference]: Start difference. First operand 7520 states and 24522 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:55,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:55,490 INFO L93 Difference]: Finished difference Result 11084 states and 35684 transitions. [2023-11-12 00:42:55,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:42:55,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-12 00:42:55,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:55,534 INFO L225 Difference]: With dead ends: 11084 [2023-11-12 00:42:55,534 INFO L226 Difference]: Without dead ends: 11084 [2023-11-12 00:42:55,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:55,535 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 81 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:55,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 23 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:42:55,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11084 states. [2023-11-12 00:42:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11084 to 7808. [2023-11-12 00:42:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7808 states, 7754 states have (on average 3.2650245034820737) internal successors, (25317), 7807 states have internal predecessors, (25317), 0 states have call successors, (0), 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 00:42:55,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7808 states to 7808 states and 25317 transitions. [2023-11-12 00:42:55,722 INFO L78 Accepts]: Start accepts. Automaton has 7808 states and 25317 transitions. Word has length 12 [2023-11-12 00:42:55,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:55,723 INFO L495 AbstractCegarLoop]: Abstraction has 7808 states and 25317 transitions. [2023-11-12 00:42:55,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:55,723 INFO L276 IsEmpty]: Start isEmpty. Operand 7808 states and 25317 transitions. [2023-11-12 00:42:55,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:42:55,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:55,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:55,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-12 00:42:55,726 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:55,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:55,727 INFO L85 PathProgramCache]: Analyzing trace with hash 636391970, now seen corresponding path program 1 times [2023-11-12 00:42:55,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:55,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663156116] [2023-11-12 00:42:55,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:55,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:55,823 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 00:42:55,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:55,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663156116] [2023-11-12 00:42:55,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663156116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:55,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:55,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:42:55,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864996570] [2023-11-12 00:42:55,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:55,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:42:55,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:55,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:42:55,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:42:55,826 INFO L87 Difference]: Start difference. First operand 7808 states and 25317 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:56,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:56,052 INFO L93 Difference]: Finished difference Result 8292 states and 26945 transitions. [2023-11-12 00:42:56,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:42:56,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:42:56,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:56,083 INFO L225 Difference]: With dead ends: 8292 [2023-11-12 00:42:56,083 INFO L226 Difference]: Without dead ends: 8292 [2023-11-12 00:42:56,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:42:56,084 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 49 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:56,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 12 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:42:56,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8292 states. [2023-11-12 00:42:56,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8292 to 8048. [2023-11-12 00:42:56,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8048 states, 7994 states have (on average 3.284963722792094) internal successors, (26260), 8047 states have internal predecessors, (26260), 0 states have call successors, (0), 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 00:42:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8048 states to 8048 states and 26260 transitions. [2023-11-12 00:42:56,299 INFO L78 Accepts]: Start accepts. Automaton has 8048 states and 26260 transitions. Word has length 13 [2023-11-12 00:42:56,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:56,300 INFO L495 AbstractCegarLoop]: Abstraction has 8048 states and 26260 transitions. [2023-11-12 00:42:56,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:56,300 INFO L276 IsEmpty]: Start isEmpty. Operand 8048 states and 26260 transitions. [2023-11-12 00:42:56,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:42:56,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:56,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:56,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-12 00:42:56,303 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:56,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:56,303 INFO L85 PathProgramCache]: Analyzing trace with hash 636391971, now seen corresponding path program 1 times [2023-11-12 00:42:56,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:56,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090161281] [2023-11-12 00:42:56,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:56,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:42:56,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:56,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090161281] [2023-11-12 00:42:56,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090161281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:56,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:56,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:42:56,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478186618] [2023-11-12 00:42:56,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:56,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:42:56,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:56,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:42:56,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:56,528 INFO L87 Difference]: Start difference. First operand 8048 states and 26260 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:56,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:56,791 INFO L93 Difference]: Finished difference Result 8260 states and 26934 transitions. [2023-11-12 00:42:56,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:42:56,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:42:56,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:56,819 INFO L225 Difference]: With dead ends: 8260 [2023-11-12 00:42:56,820 INFO L226 Difference]: Without dead ends: 8260 [2023-11-12 00:42:56,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:56,822 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 31 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:56,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 15 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:42:56,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8260 states. [2023-11-12 00:42:56,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8260 to 8066. [2023-11-12 00:42:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8066 states, 8012 states have (on average 3.2832001997004494) internal successors, (26305), 8065 states have internal predecessors, (26305), 0 states have call successors, (0), 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 00:42:57,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8066 states to 8066 states and 26305 transitions. [2023-11-12 00:42:57,165 INFO L78 Accepts]: Start accepts. Automaton has 8066 states and 26305 transitions. Word has length 13 [2023-11-12 00:42:57,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:57,167 INFO L495 AbstractCegarLoop]: Abstraction has 8066 states and 26305 transitions. [2023-11-12 00:42:57,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:57,167 INFO L276 IsEmpty]: Start isEmpty. Operand 8066 states and 26305 transitions. [2023-11-12 00:42:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:42:57,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:57,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:57,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-12 00:42:57,170 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:57,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:57,171 INFO L85 PathProgramCache]: Analyzing trace with hash 84141724, now seen corresponding path program 1 times [2023-11-12 00:42:57,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:57,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995381442] [2023-11-12 00:42:57,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:57,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:57,406 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 00:42:57,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:57,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995381442] [2023-11-12 00:42:57,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995381442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:57,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:57,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:42:57,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494359396] [2023-11-12 00:42:57,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:57,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:42:57,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:57,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:42:57,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:57,409 INFO L87 Difference]: Start difference. First operand 8066 states and 26305 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:57,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:57,796 INFO L93 Difference]: Finished difference Result 11278 states and 36948 transitions. [2023-11-12 00:42:57,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:42:57,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:42:57,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:57,849 INFO L225 Difference]: With dead ends: 11278 [2023-11-12 00:42:57,849 INFO L226 Difference]: Without dead ends: 11278 [2023-11-12 00:42:57,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:57,851 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 49 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:57,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 26 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:42:57,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11278 states. [2023-11-12 00:42:58,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11278 to 8210. [2023-11-12 00:42:58,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8210 states, 8157 states have (on average 3.3012136815005517) internal successors, (26928), 8209 states have internal predecessors, (26928), 0 states have call successors, (0), 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 00:42:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8210 states to 8210 states and 26928 transitions. [2023-11-12 00:42:58,111 INFO L78 Accepts]: Start accepts. Automaton has 8210 states and 26928 transitions. Word has length 13 [2023-11-12 00:42:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:58,112 INFO L495 AbstractCegarLoop]: Abstraction has 8210 states and 26928 transitions. [2023-11-12 00:42:58,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:58,112 INFO L276 IsEmpty]: Start isEmpty. Operand 8210 states and 26928 transitions. [2023-11-12 00:42:58,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:42:58,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:58,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:58,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-12 00:42:58,115 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:58,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:58,115 INFO L85 PathProgramCache]: Analyzing trace with hash 84141725, now seen corresponding path program 1 times [2023-11-12 00:42:58,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:58,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185042698] [2023-11-12 00:42:58,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:58,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:58,353 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 00:42:58,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:58,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185042698] [2023-11-12 00:42:58,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185042698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:58,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:58,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:42:58,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789907993] [2023-11-12 00:42:58,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:58,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:42:58,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:58,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:42:58,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:58,356 INFO L87 Difference]: Start difference. First operand 8210 states and 26928 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:58,721 INFO L93 Difference]: Finished difference Result 11838 states and 38533 transitions. [2023-11-12 00:42:58,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:42:58,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:42:58,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:58,754 INFO L225 Difference]: With dead ends: 11838 [2023-11-12 00:42:58,754 INFO L226 Difference]: Without dead ends: 11838 [2023-11-12 00:42:58,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:58,755 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 68 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:58,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 26 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:42:58,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11838 states. [2023-11-12 00:42:58,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11838 to 8432. [2023-11-12 00:42:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8432 states, 8379 states have (on average 3.287265783506385) internal successors, (27544), 8431 states have internal predecessors, (27544), 0 states have call successors, (0), 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 00:42:58,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8432 states to 8432 states and 27544 transitions. [2023-11-12 00:42:58,979 INFO L78 Accepts]: Start accepts. Automaton has 8432 states and 27544 transitions. Word has length 13 [2023-11-12 00:42:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:58,979 INFO L495 AbstractCegarLoop]: Abstraction has 8432 states and 27544 transitions. [2023-11-12 00:42:58,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 8432 states and 27544 transitions. [2023-11-12 00:42:58,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:42:58,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:58,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:58,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-12 00:42:58,982 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:58,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:58,983 INFO L85 PathProgramCache]: Analyzing trace with hash 878633851, now seen corresponding path program 1 times [2023-11-12 00:42:58,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:58,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393793812] [2023-11-12 00:42:58,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:58,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:59,192 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 00:42:59,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:59,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393793812] [2023-11-12 00:42:59,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393793812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:59,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:59,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:42:59,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581803929] [2023-11-12 00:42:59,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:59,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:42:59,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:59,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:42:59,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:59,199 INFO L87 Difference]: Start difference. First operand 8432 states and 27544 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:59,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:59,437 INFO L93 Difference]: Finished difference Result 9100 states and 29754 transitions. [2023-11-12 00:42:59,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:42:59,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:42:59,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:59,458 INFO L225 Difference]: With dead ends: 9100 [2023-11-12 00:42:59,458 INFO L226 Difference]: Without dead ends: 9100 [2023-11-12 00:42:59,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:59,459 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:59,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 16 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:42:59,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9100 states. [2023-11-12 00:42:59,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9100 to 8756. [2023-11-12 00:42:59,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8756 states, 8703 states have (on average 3.2928875100540043) internal successors, (28658), 8755 states have internal predecessors, (28658), 0 states have call successors, (0), 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 00:42:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8756 states to 8756 states and 28658 transitions. [2023-11-12 00:42:59,626 INFO L78 Accepts]: Start accepts. Automaton has 8756 states and 28658 transitions. Word has length 13 [2023-11-12 00:42:59,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:59,626 INFO L495 AbstractCegarLoop]: Abstraction has 8756 states and 28658 transitions. [2023-11-12 00:42:59,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:59,627 INFO L276 IsEmpty]: Start isEmpty. Operand 8756 states and 28658 transitions. [2023-11-12 00:42:59,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:42:59,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:59,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:42:59,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-12 00:42:59,629 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:42:59,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:59,630 INFO L85 PathProgramCache]: Analyzing trace with hash 878511090, now seen corresponding path program 1 times [2023-11-12 00:42:59,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:59,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856810773] [2023-11-12 00:42:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:59,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:59,816 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 00:42:59,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:59,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856810773] [2023-11-12 00:42:59,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856810773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:59,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:59,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:42:59,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950713681] [2023-11-12 00:42:59,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:59,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:42:59,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:59,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:42:59,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:59,819 INFO L87 Difference]: Start difference. First operand 8756 states and 28658 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:00,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:00,231 INFO L93 Difference]: Finished difference Result 11414 states and 36987 transitions. [2023-11-12 00:43:00,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:43:00,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:43:00,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:00,276 INFO L225 Difference]: With dead ends: 11414 [2023-11-12 00:43:00,277 INFO L226 Difference]: Without dead ends: 11414 [2023-11-12 00:43:00,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:00,277 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 103 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:00,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 21 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:43:00,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11414 states. [2023-11-12 00:43:00,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11414 to 9088. [2023-11-12 00:43:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9088 states, 9037 states have (on average 3.3261037955073585) internal successors, (30058), 9087 states have internal predecessors, (30058), 0 states have call successors, (0), 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 00:43:00,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9088 states to 9088 states and 30058 transitions. [2023-11-12 00:43:00,577 INFO L78 Accepts]: Start accepts. Automaton has 9088 states and 30058 transitions. Word has length 13 [2023-11-12 00:43:00,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:00,577 INFO L495 AbstractCegarLoop]: Abstraction has 9088 states and 30058 transitions. [2023-11-12 00:43:00,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:00,577 INFO L276 IsEmpty]: Start isEmpty. Operand 9088 states and 30058 transitions. [2023-11-12 00:43:00,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:43:00,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:00,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:00,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-12 00:43:00,580 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:43:00,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:00,581 INFO L85 PathProgramCache]: Analyzing trace with hash 878511091, now seen corresponding path program 2 times [2023-11-12 00:43:00,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:00,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947742012] [2023-11-12 00:43:00,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:00,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:00,829 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 00:43:00,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947742012] [2023-11-12 00:43:00,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947742012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:00,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:00,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:43:00,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508576277] [2023-11-12 00:43:00,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:00,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:43:00,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:00,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:43:00,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:00,832 INFO L87 Difference]: Start difference. First operand 9088 states and 30058 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:01,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:01,210 INFO L93 Difference]: Finished difference Result 11924 states and 39043 transitions. [2023-11-12 00:43:01,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:43:01,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:43:01,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:01,246 INFO L225 Difference]: With dead ends: 11924 [2023-11-12 00:43:01,246 INFO L226 Difference]: Without dead ends: 11924 [2023-11-12 00:43:01,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:01,246 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 63 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:01,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 23 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:43:01,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11924 states. [2023-11-12 00:43:01,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11924 to 9378. [2023-11-12 00:43:01,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9378 states, 9327 states have (on average 3.3257210249812372) internal successors, (31019), 9377 states have internal predecessors, (31019), 0 states have call successors, (0), 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 00:43:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9378 states to 9378 states and 31019 transitions. [2023-11-12 00:43:01,511 INFO L78 Accepts]: Start accepts. Automaton has 9378 states and 31019 transitions. Word has length 13 [2023-11-12 00:43:01,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:01,511 INFO L495 AbstractCegarLoop]: Abstraction has 9378 states and 31019 transitions. [2023-11-12 00:43:01,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:01,511 INFO L276 IsEmpty]: Start isEmpty. Operand 9378 states and 31019 transitions. [2023-11-12 00:43:01,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:43:01,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:01,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:01,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-12 00:43:01,514 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:43:01,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:01,514 INFO L85 PathProgramCache]: Analyzing trace with hash 862054926, now seen corresponding path program 2 times [2023-11-12 00:43:01,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:01,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826671493] [2023-11-12 00:43:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:01,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:01,830 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 00:43:01,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:01,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826671493] [2023-11-12 00:43:01,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826671493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:01,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:01,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:43:01,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8337413] [2023-11-12 00:43:01,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:01,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:43:01,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:01,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:43:01,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:01,833 INFO L87 Difference]: Start difference. First operand 9378 states and 31019 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:02,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:02,225 INFO L93 Difference]: Finished difference Result 11506 states and 37797 transitions. [2023-11-12 00:43:02,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:43:02,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:43:02,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:02,274 INFO L225 Difference]: With dead ends: 11506 [2023-11-12 00:43:02,274 INFO L226 Difference]: Without dead ends: 11506 [2023-11-12 00:43:02,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:02,275 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 57 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:02,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 21 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:43:02,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11506 states. [2023-11-12 00:43:02,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11506 to 9394. [2023-11-12 00:43:02,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9394 states, 9343 states have (on average 3.32751792786043) internal successors, (31089), 9393 states have internal predecessors, (31089), 0 states have call successors, (0), 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 00:43:02,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9394 states to 9394 states and 31089 transitions. [2023-11-12 00:43:02,634 INFO L78 Accepts]: Start accepts. Automaton has 9394 states and 31089 transitions. Word has length 13 [2023-11-12 00:43:02,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:02,634 INFO L495 AbstractCegarLoop]: Abstraction has 9394 states and 31089 transitions. [2023-11-12 00:43:02,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:02,635 INFO L276 IsEmpty]: Start isEmpty. Operand 9394 states and 31089 transitions. [2023-11-12 00:43:02,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:43:02,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:02,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:02,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-12 00:43:02,640 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:43:02,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:02,641 INFO L85 PathProgramCache]: Analyzing trace with hash 862054927, now seen corresponding path program 2 times [2023-11-12 00:43:02,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:02,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787530061] [2023-11-12 00:43:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:02,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:02,934 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 00:43:02,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:02,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787530061] [2023-11-12 00:43:02,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787530061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:02,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:02,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:43:02,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570278784] [2023-11-12 00:43:02,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:02,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:43:02,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:02,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:43:02,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:02,937 INFO L87 Difference]: Start difference. First operand 9394 states and 31089 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:03,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:03,306 INFO L93 Difference]: Finished difference Result 10880 states and 35982 transitions. [2023-11-12 00:43:03,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:43:03,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:43:03,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:03,353 INFO L225 Difference]: With dead ends: 10880 [2023-11-12 00:43:03,353 INFO L226 Difference]: Without dead ends: 10880 [2023-11-12 00:43:03,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:03,354 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 55 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:03,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 24 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:43:03,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10880 states. [2023-11-12 00:43:03,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10880 to 9342. [2023-11-12 00:43:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9342 states, 9291 states have (on average 3.3231083844580778) internal successors, (30875), 9341 states have internal predecessors, (30875), 0 states have call successors, (0), 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 00:43:03,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9342 states to 9342 states and 30875 transitions. [2023-11-12 00:43:03,644 INFO L78 Accepts]: Start accepts. Automaton has 9342 states and 30875 transitions. Word has length 13 [2023-11-12 00:43:03,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:03,644 INFO L495 AbstractCegarLoop]: Abstraction has 9342 states and 30875 transitions. [2023-11-12 00:43:03,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:03,645 INFO L276 IsEmpty]: Start isEmpty. Operand 9342 states and 30875 transitions. [2023-11-12 00:43:03,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:43:03,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:03,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:03,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-12 00:43:03,647 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:43:03,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:03,648 INFO L85 PathProgramCache]: Analyzing trace with hash 862160016, now seen corresponding path program 3 times [2023-11-12 00:43:03,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:03,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383462004] [2023-11-12 00:43:03,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:03,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:03,904 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 00:43:03,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:03,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383462004] [2023-11-12 00:43:03,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383462004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:03,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:03,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:43:03,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326109190] [2023-11-12 00:43:03,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:03,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:43:03,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:03,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:43:03,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:03,907 INFO L87 Difference]: Start difference. First operand 9342 states and 30875 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:04,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:04,285 INFO L93 Difference]: Finished difference Result 11108 states and 36304 transitions. [2023-11-12 00:43:04,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:43:04,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:43:04,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:04,334 INFO L225 Difference]: With dead ends: 11108 [2023-11-12 00:43:04,334 INFO L226 Difference]: Without dead ends: 11108 [2023-11-12 00:43:04,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:04,335 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 57 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:04,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 20 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:43:04,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11108 states. [2023-11-12 00:43:04,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11108 to 9364. [2023-11-12 00:43:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9364 states, 9313 states have (on average 3.3134328358208953) internal successors, (30858), 9363 states have internal predecessors, (30858), 0 states have call successors, (0), 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 00:43:04,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9364 states to 9364 states and 30858 transitions. [2023-11-12 00:43:04,637 INFO L78 Accepts]: Start accepts. Automaton has 9364 states and 30858 transitions. Word has length 13 [2023-11-12 00:43:04,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:04,638 INFO L495 AbstractCegarLoop]: Abstraction has 9364 states and 30858 transitions. [2023-11-12 00:43:04,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:04,638 INFO L276 IsEmpty]: Start isEmpty. Operand 9364 states and 30858 transitions. [2023-11-12 00:43:04,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:43:04,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:04,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:04,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-12 00:43:04,641 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:43:04,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:04,642 INFO L85 PathProgramCache]: Analyzing trace with hash 862160017, now seen corresponding path program 3 times [2023-11-12 00:43:04,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:04,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229468826] [2023-11-12 00:43:04,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:04,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:04,895 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 00:43:04,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:04,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229468826] [2023-11-12 00:43:04,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229468826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:04,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:04,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:43:04,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019506762] [2023-11-12 00:43:04,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:04,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:43:04,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:04,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:43:04,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:04,898 INFO L87 Difference]: Start difference. First operand 9364 states and 30858 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:05,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:05,239 INFO L93 Difference]: Finished difference Result 11042 states and 36310 transitions. [2023-11-12 00:43:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:43:05,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:43:05,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:05,270 INFO L225 Difference]: With dead ends: 11042 [2023-11-12 00:43:05,270 INFO L226 Difference]: Without dead ends: 11042 [2023-11-12 00:43:05,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:05,271 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 81 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:05,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 22 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:43:05,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11042 states. [2023-11-12 00:43:05,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11042 to 9364. [2023-11-12 00:43:05,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9364 states, 9313 states have (on average 3.311714807258671) internal successors, (30842), 9363 states have internal predecessors, (30842), 0 states have call successors, (0), 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 00:43:05,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9364 states to 9364 states and 30842 transitions. [2023-11-12 00:43:05,463 INFO L78 Accepts]: Start accepts. Automaton has 9364 states and 30842 transitions. Word has length 13 [2023-11-12 00:43:05,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:05,464 INFO L495 AbstractCegarLoop]: Abstraction has 9364 states and 30842 transitions. [2023-11-12 00:43:05,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:05,464 INFO L276 IsEmpty]: Start isEmpty. Operand 9364 states and 30842 transitions. [2023-11-12 00:43:05,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:43:05,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:05,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:05,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-12 00:43:05,467 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:43:05,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:05,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1925860912, now seen corresponding path program 4 times [2023-11-12 00:43:05,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:05,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499951714] [2023-11-12 00:43:05,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:05,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:05,634 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 00:43:05,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:05,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499951714] [2023-11-12 00:43:05,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499951714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:05,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:05,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:43:05,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84286178] [2023-11-12 00:43:05,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:05,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:43:05,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:05,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:43:05,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:43:05,636 INFO L87 Difference]: Start difference. First operand 9364 states and 30842 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:06,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:06,111 INFO L93 Difference]: Finished difference Result 12462 states and 40749 transitions. [2023-11-12 00:43:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:43:06,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:43:06,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:06,158 INFO L225 Difference]: With dead ends: 12462 [2023-11-12 00:43:06,158 INFO L226 Difference]: Without dead ends: 12462 [2023-11-12 00:43:06,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:43:06,159 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 107 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:06,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 35 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:43:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12462 states. [2023-11-12 00:43:06,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12462 to 9070. [2023-11-12 00:43:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9070 states, 9021 states have (on average 3.3028489081033143) internal successors, (29795), 9069 states have internal predecessors, (29795), 0 states have call successors, (0), 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 00:43:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9070 states to 9070 states and 29795 transitions. [2023-11-12 00:43:06,431 INFO L78 Accepts]: Start accepts. Automaton has 9070 states and 29795 transitions. Word has length 13 [2023-11-12 00:43:06,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:06,432 INFO L495 AbstractCegarLoop]: Abstraction has 9070 states and 29795 transitions. [2023-11-12 00:43:06,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:06,432 INFO L276 IsEmpty]: Start isEmpty. Operand 9070 states and 29795 transitions. [2023-11-12 00:43:06,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:43:06,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:06,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:06,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-12 00:43:06,434 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:43:06,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:06,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1925860913, now seen corresponding path program 4 times [2023-11-12 00:43:06,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:06,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903948969] [2023-11-12 00:43:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:06,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:06,642 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 00:43:06,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:06,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903948969] [2023-11-12 00:43:06,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903948969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:06,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:06,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:43:06,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89091632] [2023-11-12 00:43:06,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:06,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:43:06,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:06,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:43:06,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:43:06,645 INFO L87 Difference]: Start difference. First operand 9070 states and 29795 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:07,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:07,125 INFO L93 Difference]: Finished difference Result 12078 states and 39000 transitions. [2023-11-12 00:43:07,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:43:07,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:43:07,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:07,168 INFO L225 Difference]: With dead ends: 12078 [2023-11-12 00:43:07,168 INFO L226 Difference]: Without dead ends: 12078 [2023-11-12 00:43:07,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:43:07,169 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 106 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:07,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 42 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:43:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12078 states. [2023-11-12 00:43:07,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12078 to 9218. [2023-11-12 00:43:07,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9218 states, 9169 states have (on average 3.3036318028138294) internal successors, (30291), 9217 states have internal predecessors, (30291), 0 states have call successors, (0), 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 00:43:07,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9218 states to 9218 states and 30291 transitions. [2023-11-12 00:43:07,431 INFO L78 Accepts]: Start accepts. Automaton has 9218 states and 30291 transitions. Word has length 13 [2023-11-12 00:43:07,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:07,431 INFO L495 AbstractCegarLoop]: Abstraction has 9218 states and 30291 transitions. [2023-11-12 00:43:07,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:07,432 INFO L276 IsEmpty]: Start isEmpty. Operand 9218 states and 30291 transitions. [2023-11-12 00:43:07,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:43:07,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:07,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:07,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-12 00:43:07,435 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:43:07,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:07,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1746685070, now seen corresponding path program 1 times [2023-11-12 00:43:07,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:07,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918719802] [2023-11-12 00:43:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:07,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:07,632 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 00:43:07,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:07,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918719802] [2023-11-12 00:43:07,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918719802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:07,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:07,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:43:07,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223900289] [2023-11-12 00:43:07,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:07,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:43:07,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:07,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:43:07,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:07,635 INFO L87 Difference]: Start difference. First operand 9218 states and 30291 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:07,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:07,971 INFO L93 Difference]: Finished difference Result 9694 states and 31741 transitions. [2023-11-12 00:43:07,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:43:07,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-12 00:43:07,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:08,002 INFO L225 Difference]: With dead ends: 9694 [2023-11-12 00:43:08,002 INFO L226 Difference]: Without dead ends: 9694 [2023-11-12 00:43:08,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:08,003 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 49 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:08,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 27 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:43:08,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9694 states. [2023-11-12 00:43:08,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9694 to 9118. [2023-11-12 00:43:08,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9118 states, 9069 states have (on average 3.2899988973425955) internal successors, (29837), 9117 states have internal predecessors, (29837), 0 states have call successors, (0), 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 00:43:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9118 states to 9118 states and 29837 transitions. [2023-11-12 00:43:08,232 INFO L78 Accepts]: Start accepts. Automaton has 9118 states and 29837 transitions. Word has length 14 [2023-11-12 00:43:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:08,232 INFO L495 AbstractCegarLoop]: Abstraction has 9118 states and 29837 transitions. [2023-11-12 00:43:08,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:08,233 INFO L276 IsEmpty]: Start isEmpty. Operand 9118 states and 29837 transitions. [2023-11-12 00:43:08,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:43:08,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:08,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:08,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-12 00:43:08,236 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:43:08,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:08,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1245869714, now seen corresponding path program 1 times [2023-11-12 00:43:08,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:08,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748054226] [2023-11-12 00:43:08,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:08,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:08,436 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 00:43:08,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:08,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748054226] [2023-11-12 00:43:08,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748054226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:08,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:08,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:43:08,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772663099] [2023-11-12 00:43:08,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:08,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:43:08,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:08,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:43:08,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:08,439 INFO L87 Difference]: Start difference. First operand 9118 states and 29837 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:08,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:08,794 INFO L93 Difference]: Finished difference Result 9810 states and 31982 transitions. [2023-11-12 00:43:08,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:43:08,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-12 00:43:08,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:08,826 INFO L225 Difference]: With dead ends: 9810 [2023-11-12 00:43:08,826 INFO L226 Difference]: Without dead ends: 9810 [2023-11-12 00:43:08,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:08,827 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 57 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:08,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 27 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:43:08,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9810 states. [2023-11-12 00:43:09,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9810 to 9086. [2023-11-12 00:43:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9086 states, 9037 states have (on average 3.2770831027996015) internal successors, (29615), 9085 states have internal predecessors, (29615), 0 states have call successors, (0), 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 00:43:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9086 states to 9086 states and 29615 transitions. [2023-11-12 00:43:09,050 INFO L78 Accepts]: Start accepts. Automaton has 9086 states and 29615 transitions. Word has length 14 [2023-11-12 00:43:09,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:09,050 INFO L495 AbstractCegarLoop]: Abstraction has 9086 states and 29615 transitions. [2023-11-12 00:43:09,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 9086 states and 29615 transitions. [2023-11-12 00:43:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:43:09,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:09,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:09,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-12 00:43:09,054 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:43:09,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:09,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1245886880, now seen corresponding path program 1 times [2023-11-12 00:43:09,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:09,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227718036] [2023-11-12 00:43:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:09,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:09,263 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 00:43:09,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:09,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227718036] [2023-11-12 00:43:09,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227718036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:09,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:09,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:43:09,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024889926] [2023-11-12 00:43:09,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:09,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:43:09,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:09,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:43:09,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:43:09,267 INFO L87 Difference]: Start difference. First operand 9086 states and 29615 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:09,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:09,706 INFO L93 Difference]: Finished difference Result 14822 states and 48255 transitions. [2023-11-12 00:43:09,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:43:09,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-12 00:43:09,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:09,741 INFO L225 Difference]: With dead ends: 14822 [2023-11-12 00:43:09,741 INFO L226 Difference]: Without dead ends: 14822 [2023-11-12 00:43:09,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:43:09,741 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 117 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:09,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 32 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:43:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14822 states. [2023-11-12 00:43:09,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14822 to 9210. [2023-11-12 00:43:09,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9210 states, 9161 states have (on average 3.2779172579412728) internal successors, (30029), 9209 states have internal predecessors, (30029), 0 states have call successors, (0), 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 00:43:09,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9210 states to 9210 states and 30029 transitions. [2023-11-12 00:43:09,940 INFO L78 Accepts]: Start accepts. Automaton has 9210 states and 30029 transitions. Word has length 14 [2023-11-12 00:43:09,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:09,940 INFO L495 AbstractCegarLoop]: Abstraction has 9210 states and 30029 transitions. [2023-11-12 00:43:09,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:09,940 INFO L276 IsEmpty]: Start isEmpty. Operand 9210 states and 30029 transitions. [2023-11-12 00:43:09,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:43:09,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:09,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:09,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-12 00:43:09,943 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-12 00:43:09,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:09,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1686623176, now seen corresponding path program 2 times [2023-11-12 00:43:09,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:09,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960448648] [2023-11-12 00:43:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:09,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:10,164 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 00:43:10,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:10,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960448648] [2023-11-12 00:43:10,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960448648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:10,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:10,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:43:10,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176195473] [2023-11-12 00:43:10,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:10,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:43:10,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:10,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:43:10,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:43:10,167 INFO L87 Difference]: Start difference. First operand 9210 states and 30029 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:10,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:10,686 INFO L93 Difference]: Finished difference Result 10708 states and 34429 transitions. [2023-11-12 00:43:10,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:43:10,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-12 00:43:10,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:10,725 INFO L225 Difference]: With dead ends: 10708 [2023-11-12 00:43:10,725 INFO L226 Difference]: Without dead ends: 10708 [2023-11-12 00:43:10,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:43:10,726 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 81 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:10,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 47 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:43:10,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10708 states.