./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a45428c1422efa85fd947d764edf0847add56b17c38e18f54072b18b642fedaf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:01:17,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:01:17,576 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:01:17,584 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:01:17,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:01:17,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:01:17,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:01:17,639 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:01:17,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:01:17,645 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:01:17,646 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:01:17,646 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:01:17,647 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:01:17,649 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:01:17,649 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:01:17,649 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:01:17,650 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:01:17,650 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:01:17,651 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:01:17,651 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:01:17,652 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:01:17,652 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:01:17,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:01:17,653 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:01:17,654 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:01:17,666 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:01:17,667 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:01:17,667 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:01:17,668 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:01:17,668 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:01:17,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:01:17,669 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:01:17,669 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:01:17,669 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:01:17,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:01:17,670 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:01:17,670 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:01:17,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:01:17,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:01:17,671 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:01:17,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:01:17,671 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:01:17,671 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:01:17,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:01:17,672 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:01:17,672 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:01:17,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:01:17,672 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_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a45428c1422efa85fd947d764edf0847add56b17c38e18f54072b18b642fedaf [2023-11-19 05:01:18,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:01:18,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:01:18,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:01:18,054 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:01:18,055 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:01:18,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i [2023-11-19 05:01:21,287 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:01:21,609 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:01:21,610 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i [2023-11-19 05:01:21,633 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/data/df60a2b3f/3d2abf6eec26428ba489f07b44895cec/FLAGb2831cea3 [2023-11-19 05:01:21,650 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/data/df60a2b3f/3d2abf6eec26428ba489f07b44895cec [2023-11-19 05:01:21,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:01:21,658 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:01:21,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:01:21,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:01:21,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:01:21,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:01:21" (1/1) ... [2023-11-19 05:01:21,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd1187f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:21, skipping insertion in model container [2023-11-19 05:01:21,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:01:21" (1/1) ... [2023-11-19 05:01:21,744 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:01:22,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:01:22,326 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:01:22,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:01:22,476 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:01:22,476 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:01:22,484 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:01:22,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:22 WrapperNode [2023-11-19 05:01:22,485 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:01:22,486 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:01:22,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:01:22,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:01:22,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:22" (1/1) ... [2023-11-19 05:01:22,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:22" (1/1) ... [2023-11-19 05:01:22,577 INFO L138 Inliner]: procedures = 177, calls = 88, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 190 [2023-11-19 05:01:22,578 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:01:22,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:01:22,579 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:01:22,579 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:01:22,588 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:22" (1/1) ... [2023-11-19 05:01:22,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:22" (1/1) ... [2023-11-19 05:01:22,593 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:22" (1/1) ... [2023-11-19 05:01:22,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:22" (1/1) ... [2023-11-19 05:01:22,607 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:22" (1/1) ... [2023-11-19 05:01:22,610 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:22" (1/1) ... [2023-11-19 05:01:22,613 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:22" (1/1) ... [2023-11-19 05:01:22,616 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:22" (1/1) ... [2023-11-19 05:01:22,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:01:22,622 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:01:22,622 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:01:22,623 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:01:22,623 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:22" (1/1) ... [2023-11-19 05:01:22,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:01:22,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:01:22,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:01:22,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:01:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:01:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:01:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 05:01:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:01:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:01:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:01:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 05:01:22,724 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 05:01:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 05:01:22,725 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 05:01:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 05:01:22,725 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 05:01:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 05:01:22,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 05:01:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:01:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 05:01:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:01:22,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:01:22,728 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:01:22,905 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:01:22,907 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:01:23,542 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:01:23,928 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:01:23,929 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:01:23,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:01:23 BoogieIcfgContainer [2023-11-19 05:01:23,936 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:01:23,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:01:23,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:01:23,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:01:23,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:01:21" (1/3) ... [2023-11-19 05:01:23,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49466dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:01:23, skipping insertion in model container [2023-11-19 05:01:23,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:22" (2/3) ... [2023-11-19 05:01:23,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49466dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:01:23, skipping insertion in model container [2023-11-19 05:01:23,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:01:23" (3/3) ... [2023-11-19 05:01:23,948 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_power.oepc.i [2023-11-19 05:01:23,958 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 05:01:23,969 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:01:23,969 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 05:01:23,969 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:01:24,072 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:01:24,191 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:01:24,221 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 159 transitions, 334 flow [2023-11-19 05:01:24,224 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 159 transitions, 334 flow [2023-11-19 05:01:24,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 159 transitions, 334 flow [2023-11-19 05:01:24,355 INFO L124 PetriNetUnfolderBase]: 3/155 cut-off events. [2023-11-19 05:01:24,355 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 05:01:24,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 155 events. 3/155 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-11-19 05:01:24,369 INFO L119 LiptonReduction]: Number of co-enabled transitions 4246 [2023-11-19 05:01:47,004 INFO L134 LiptonReduction]: Checked pairs total: 11057 [2023-11-19 05:01:47,004 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-11-19 05:01:47,013 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 36 transitions, 88 flow [2023-11-19 05:01:47,418 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5530 states, 5450 states have (on average 4.297247706422018) internal successors, (23420), 5529 states have internal predecessors, (23420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:47,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:01:47,451 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;@1e9cf2fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:01:47,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-19 05:01:47,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 5530 states, 5450 states have (on average 4.297247706422018) internal successors, (23420), 5529 states have internal predecessors, (23420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:47,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:01:47,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:47,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:01:47,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 05:01:47,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:47,491 INFO L85 PathProgramCache]: Analyzing trace with hash 30794704, now seen corresponding path program 1 times [2023-11-19 05:01:47,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:01:47,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329805930] [2023-11-19 05:01:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:47,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:01:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:47,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:01:47,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329805930] [2023-11-19 05:01:47,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329805930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:47,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:47,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:01:47,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090039373] [2023-11-19 05:01:47,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:47,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:01:47,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:01:47,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:01:47,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:01:48,011 INFO L87 Difference]: Start difference. First operand has 5530 states, 5450 states have (on average 4.297247706422018) internal successors, (23420), 5529 states have internal predecessors, (23420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2023-11-19 05:01:48,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:48,276 INFO L93 Difference]: Finished difference Result 3194 states and 11269 transitions. [2023-11-19 05:01:48,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:01:48,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2023-11-19 05:01:48,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:48,334 INFO L225 Difference]: With dead ends: 3194 [2023-11-19 05:01:48,334 INFO L226 Difference]: Without dead ends: 3194 [2023-11-19 05:01:48,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:01:48,339 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 16 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:48,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:01:48,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2023-11-19 05:01:48,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 3194. [2023-11-19 05:01:48,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 3130 states have (on average 3.6003194888178913) internal successors, (11269), 3193 states have internal predecessors, (11269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 11269 transitions. [2023-11-19 05:01:48,705 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 11269 transitions. Word has length 4 [2023-11-19 05:01:48,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:48,706 INFO L495 AbstractCegarLoop]: Abstraction has 3194 states and 11269 transitions. [2023-11-19 05:01:48,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2023-11-19 05:01:48,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 11269 transitions. [2023-11-19 05:01:48,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:01:48,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:48,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:48,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:01:48,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 05:01:48,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:48,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1656843016, now seen corresponding path program 1 times [2023-11-19 05:01:48,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:01:48,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996107433] [2023-11-19 05:01:48,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:48,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:01:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:48,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:48,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:01:48,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996107433] [2023-11-19 05:01:48,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996107433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:48,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:48,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:01:48,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659896736] [2023-11-19 05:01:48,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:48,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:01:48,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:01:48,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:01:48,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:01:48,868 INFO L87 Difference]: Start difference. First operand 3194 states and 11269 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:49,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:49,074 INFO L93 Difference]: Finished difference Result 1930 states and 6835 transitions. [2023-11-19 05:01:49,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:01:49,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:01:49,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:49,099 INFO L225 Difference]: With dead ends: 1930 [2023-11-19 05:01:49,099 INFO L226 Difference]: Without dead ends: 1930 [2023-11-19 05:01:49,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:01:49,101 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 34 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:49,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 4 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:01:49,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2023-11-19 05:01:49,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1930. [2023-11-19 05:01:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1916 states have (on average 3.567327766179541) internal successors, (6835), 1929 states have internal predecessors, (6835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 6835 transitions. [2023-11-19 05:01:49,204 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 6835 transitions. Word has length 8 [2023-11-19 05:01:49,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:49,205 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 6835 transitions. [2023-11-19 05:01:49,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 6835 transitions. [2023-11-19 05:01:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:01:49,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:49,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:49,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:01:49,207 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 05:01:49,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:49,208 INFO L85 PathProgramCache]: Analyzing trace with hash 177471113, now seen corresponding path program 1 times [2023-11-19 05:01:49,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:01:49,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698390972] [2023-11-19 05:01:49,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:49,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:01:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:49,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:01:49,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698390972] [2023-11-19 05:01:49,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698390972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:49,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:49,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:01:49,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529736990] [2023-11-19 05:01:49,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:49,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:01:49,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:01:49,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:01:49,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:01:49,321 INFO L87 Difference]: Start difference. First operand 1930 states and 6835 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) [2023-11-19 05:01:49,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:49,503 INFO L93 Difference]: Finished difference Result 1300 states and 4511 transitions. [2023-11-19 05:01:49,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:01:49,504 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 [2023-11-19 05:01:49,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:49,517 INFO L225 Difference]: With dead ends: 1300 [2023-11-19 05:01:49,517 INFO L226 Difference]: Without dead ends: 1300 [2023-11-19 05:01:49,519 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 [2023-11-19 05:01:49,522 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 41 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:49,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:01:49,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2023-11-19 05:01:49,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1300. [2023-11-19 05:01:49,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1290 states have (on average 3.4968992248062016) internal successors, (4511), 1299 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 4511 transitions. [2023-11-19 05:01:49,583 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 4511 transitions. Word has length 9 [2023-11-19 05:01:49,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:49,583 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 4511 transitions. [2023-11-19 05:01:49,584 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) [2023-11-19 05:01:49,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 4511 transitions. [2023-11-19 05:01:49,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:01:49,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:49,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:49,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:01:49,595 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 05:01:49,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:49,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1007918263, now seen corresponding path program 1 times [2023-11-19 05:01:49,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:01:49,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915896706] [2023-11-19 05:01:49,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:49,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:01:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:49,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:01:49,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915896706] [2023-11-19 05:01:49,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915896706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:49,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:49,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:01:49,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514263999] [2023-11-19 05:01:49,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:49,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:01:49,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:01:49,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:01:49,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:01:49,902 INFO L87 Difference]: Start difference. First operand 1300 states and 4511 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:50,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:50,135 INFO L93 Difference]: Finished difference Result 1126 states and 4037 transitions. [2023-11-19 05:01:50,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:01:50,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-11-19 05:01:50,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:50,149 INFO L225 Difference]: With dead ends: 1126 [2023-11-19 05:01:50,149 INFO L226 Difference]: Without dead ends: 1126 [2023-11-19 05:01:50,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:01:50,151 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 50 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:50,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 4 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:01:50,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2023-11-19 05:01:50,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2023-11-19 05:01:50,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1122 states have (on average 3.5980392156862746) internal successors, (4037), 1125 states have internal predecessors, (4037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:50,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 4037 transitions. [2023-11-19 05:01:50,201 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 4037 transitions. Word has length 15 [2023-11-19 05:01:50,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:50,201 INFO L495 AbstractCegarLoop]: Abstraction has 1126 states and 4037 transitions. [2023-11-19 05:01:50,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:50,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 4037 transitions. [2023-11-19 05:01:50,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 05:01:50,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:50,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:50,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:01:50,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 05:01:50,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:50,207 INFO L85 PathProgramCache]: Analyzing trace with hash -728518726, now seen corresponding path program 1 times [2023-11-19 05:01:50,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:01:50,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486675889] [2023-11-19 05:01:50,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:50,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:01:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:50,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:50,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:01:50,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486675889] [2023-11-19 05:01:50,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486675889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:50,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:50,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:01:50,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785340650] [2023-11-19 05:01:50,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:50,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:01:50,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:01:50,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:01:50,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:01:50,445 INFO L87 Difference]: Start difference. First operand 1126 states and 4037 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:50,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:50,659 INFO L93 Difference]: Finished difference Result 1110 states and 4009 transitions. [2023-11-19 05:01:50,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:01:50,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-19 05:01:50,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:50,660 INFO L225 Difference]: With dead ends: 1110 [2023-11-19 05:01:50,660 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:01:50,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:01:50,661 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 55 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:50,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:01:50,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:01:50,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:01:50,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:01:50,663 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2023-11-19 05:01:50,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:50,663 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:01:50,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:50,663 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:01:50,664 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:01:50,668 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-11-19 05:01:50,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-11-19 05:01:50,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-11-19 05:01:50,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-11-19 05:01:50,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-11-19 05:01:50,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-11-19 05:01:50,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-11-19 05:01:50,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-11-19 05:01:50,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 20 remaining) [2023-11-19 05:01:50,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 20 remaining) [2023-11-19 05:01:50,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2023-11-19 05:01:50,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-11-19 05:01:50,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-11-19 05:01:50,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-11-19 05:01:50,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-11-19 05:01:50,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-11-19 05:01:50,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-11-19 05:01:50,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-11-19 05:01:50,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-11-19 05:01:50,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-11-19 05:01:50,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:01:50,683 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 05:01:50,688 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 05:01:50,688 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:01:50,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:01:50 BasicIcfg [2023-11-19 05:01:50,694 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:01:50,694 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:01:50,694 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:01:50,695 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:01:50,695 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:01:23" (3/4) ... [2023-11-19 05:01:50,697 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:01:50,700 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-19 05:01:50,700 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-19 05:01:50,701 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-19 05:01:50,701 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-19 05:01:50,711 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-19 05:01:50,711 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 05:01:50,712 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 05:01:50,712 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:01:50,816 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:01:50,817 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:01:50,817 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:01:50,818 INFO L158 Benchmark]: Toolchain (without parser) took 29160.33ms. Allocated memory was 146.8MB in the beginning and 281.0MB in the end (delta: 134.2MB). Free memory was 98.4MB in the beginning and 88.4MB in the end (delta: 10.1MB). Peak memory consumption was 145.9MB. Max. memory is 16.1GB. [2023-11-19 05:01:50,818 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 146.8MB. Free memory was 112.6MB in the beginning and 112.4MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:01:50,819 INFO L158 Benchmark]: CACSL2BoogieTranslator took 824.95ms. Allocated memory is still 146.8MB. Free memory was 98.4MB in the beginning and 72.7MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-19 05:01:50,819 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.63ms. Allocated memory is still 146.8MB. Free memory was 72.7MB in the beginning and 70.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:01:50,819 INFO L158 Benchmark]: Boogie Preprocessor took 43.09ms. Allocated memory is still 146.8MB. Free memory was 70.1MB in the beginning and 67.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:01:50,820 INFO L158 Benchmark]: RCFGBuilder took 1314.26ms. Allocated memory was 146.8MB in the beginning and 192.9MB in the end (delta: 46.1MB). Free memory was 67.5MB in the beginning and 91.9MB in the end (delta: -24.3MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2023-11-19 05:01:50,820 INFO L158 Benchmark]: TraceAbstraction took 26754.53ms. Allocated memory was 192.9MB in the beginning and 281.0MB in the end (delta: 88.1MB). Free memory was 90.8MB in the beginning and 93.6MB in the end (delta: -2.8MB). Peak memory consumption was 84.2MB. Max. memory is 16.1GB. [2023-11-19 05:01:50,821 INFO L158 Benchmark]: Witness Printer took 123.04ms. Allocated memory is still 281.0MB. Free memory was 93.6MB in the beginning and 88.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 05:01:50,824 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 146.8MB. Free memory was 112.6MB in the beginning and 112.4MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 824.95ms. Allocated memory is still 146.8MB. Free memory was 98.4MB in the beginning and 72.7MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.63ms. Allocated memory is still 146.8MB. Free memory was 72.7MB in the beginning and 70.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.09ms. Allocated memory is still 146.8MB. Free memory was 70.1MB in the beginning and 67.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1314.26ms. Allocated memory was 146.8MB in the beginning and 192.9MB in the end (delta: 46.1MB). Free memory was 67.5MB in the beginning and 91.9MB in the end (delta: -24.3MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. * TraceAbstraction took 26754.53ms. Allocated memory was 192.9MB in the beginning and 281.0MB in the end (delta: 88.1MB). Free memory was 90.8MB in the beginning and 93.6MB in the end (delta: -2.8MB). Peak memory consumption was 84.2MB. Max. memory is 16.1GB. * Witness Printer took 123.04ms. Allocated memory is still 281.0MB. Free memory was 93.6MB in the beginning and 88.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22.8s, 169 PlacesBefore, 48 PlacesAfterwards, 159 TransitionsBefore, 36 TransitionsAfterwards, 4246 CoEnabledTransitionPairs, 7 FixpointIterations, 59 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 143 TotalNumberOfCompositions, 11057 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4869, independent: 4575, independent conditional: 0, independent unconditional: 4575, dependent: 294, dependent conditional: 0, dependent unconditional: 294, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2797, independent: 2733, independent conditional: 0, independent unconditional: 2733, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2797, independent: 2662, independent conditional: 0, independent unconditional: 2662, dependent: 135, dependent conditional: 0, dependent unconditional: 135, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 135, independent: 71, independent conditional: 0, independent unconditional: 71, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1506, independent: 160, independent conditional: 0, independent unconditional: 160, dependent: 1346, dependent conditional: 0, dependent unconditional: 1346, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4869, independent: 1842, independent conditional: 0, independent unconditional: 1842, dependent: 230, dependent conditional: 0, dependent unconditional: 230, unknown: 2797, unknown conditional: 0, unknown unconditional: 2797] , Statistics on independence cache: Total cache size (in pairs): 246, Positive cache size: 220, Positive conditional cache size: 0, Positive unconditional cache size: 220, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 788]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 788]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 800]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 800]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 820]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 820]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 837]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 837]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 199 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 26.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 23.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 196 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 196 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 382 IncrementalHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 6 mSDtfsCounter, 382 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5530occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 153 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 05:01:50,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb835be-9e57-43dc-b80f-6c4cd4fb3142/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE