./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/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_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/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_89e8b0d2-dc57-4f4f-a21c-a8109a161065/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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:18:15,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:18:15,158 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 04:18:15,165 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:18:15,166 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:18:15,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:18:15,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:18:15,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:18:15,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:18:15,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:18:15,212 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:18:15,213 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:18:15,213 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:18:15,215 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:18:15,216 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:18:15,216 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:18:15,217 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:18:15,217 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:18:15,217 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:18:15,218 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:18:15,218 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:18:15,219 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:18:15,220 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:18:15,221 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:18:15,221 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:18:15,221 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:18:15,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:18:15,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:18:15,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:18:15,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:18:15,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:18:15,225 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:18:15,225 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:18:15,225 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:18:15,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:18:15,226 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:18:15,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:18:15,226 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:18:15,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:18:15,227 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:18:15,227 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:18:15,227 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:18:15,228 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:18:15,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:18:15,229 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:18:15,229 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:18:15,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:18:15,229 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_89e8b0d2-dc57-4f4f-a21c-a8109a161065/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2023-11-19 04:18:15,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:18:15,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:18:15,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:18:15,536 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:18:15,537 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:18:15,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-19 04:18:18,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:18:19,076 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:18:19,076 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-19 04:18:19,085 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/data/513f46183/bab420420aff487898dba6999d83c77c/FLAG3171b8170 [2023-11-19 04:18:19,100 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/data/513f46183/bab420420aff487898dba6999d83c77c [2023-11-19 04:18:19,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:18:19,104 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:18:19,105 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:18:19,106 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:18:19,111 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:18:19,112 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:18:19" (1/1) ... [2023-11-19 04:18:19,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7325800d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:19, skipping insertion in model container [2023-11-19 04:18:19,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:18:19" (1/1) ... [2023-11-19 04:18:19,139 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:18:19,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:18:19,345 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:18:19,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:18:19,388 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:18:19,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:19 WrapperNode [2023-11-19 04:18:19,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:18:19,390 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:18:19,390 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:18:19,390 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:18:19,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:19" (1/1) ... [2023-11-19 04:18:19,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:19" (1/1) ... [2023-11-19 04:18:19,436 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 193 [2023-11-19 04:18:19,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:18:19,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:18:19,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:18:19,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:18:19,447 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:19" (1/1) ... [2023-11-19 04:18:19,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:19" (1/1) ... [2023-11-19 04:18:19,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:19" (1/1) ... [2023-11-19 04:18:19,451 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:19" (1/1) ... [2023-11-19 04:18:19,462 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:19" (1/1) ... [2023-11-19 04:18:19,467 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:19" (1/1) ... [2023-11-19 04:18:19,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:19" (1/1) ... [2023-11-19 04:18:19,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:19" (1/1) ... [2023-11-19 04:18:19,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:18:19,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:18:19,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:18:19,476 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:18:19,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:19" (1/1) ... [2023-11-19 04:18:19,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:18:19,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:19,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:18:19,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:18:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:18:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 04:18:19,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 04:18:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 04:18:19,553 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 04:18:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:18:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:18:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:18:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:18:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:18:19,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:18:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:18:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:18:19,558 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 04:18:19,669 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:18:19,671 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:18:20,025 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:18:20,041 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:18:20,045 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 04:18:20,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:18:20 BoogieIcfgContainer [2023-11-19 04:18:20,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:18:20,056 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:18:20,057 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:18:20,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:18:20,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:18:19" (1/3) ... [2023-11-19 04:18:20,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253faf13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:18:20, skipping insertion in model container [2023-11-19 04:18:20,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:19" (2/3) ... [2023-11-19 04:18:20,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253faf13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:18:20, skipping insertion in model container [2023-11-19 04:18:20,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:18:20" (3/3) ... [2023-11-19 04:18:20,063 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-11-19 04:18:20,075 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 04:18:20,086 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:18:20,086 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-19 04:18:20,086 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:18:20,215 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 04:18:20,256 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:18:20,271 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 238 transitions, 490 flow [2023-11-19 04:18:20,274 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 238 transitions, 490 flow [2023-11-19 04:18:20,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 238 transitions, 490 flow [2023-11-19 04:18:20,420 INFO L124 PetriNetUnfolderBase]: 19/236 cut-off events. [2023-11-19 04:18:20,421 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 04:18:20,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 236 events. 19/236 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 266 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 165. Up to 3 conditions per place. [2023-11-19 04:18:20,449 INFO L119 LiptonReduction]: Number of co-enabled transitions 4400 [2023-11-19 04:18:29,736 INFO L134 LiptonReduction]: Checked pairs total: 5206 [2023-11-19 04:18:29,737 INFO L136 LiptonReduction]: Total number of compositions: 275 [2023-11-19 04:18:29,752 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 37 transitions, 88 flow [2023-11-19 04:18:29,797 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 129 states, 115 states have (on average 2.765217391304348) internal successors, (318), 128 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:29,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:18:29,842 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;@1b783604, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:18:29,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-19 04:18:29,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 115 states have (on average 2.765217391304348) internal successors, (318), 128 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:29,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 04:18:29,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:29,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 04:18:29,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:29,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:29,868 INFO L85 PathProgramCache]: Analyzing trace with hash 30005, now seen corresponding path program 1 times [2023-11-19 04:18:29,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:29,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423954163] [2023-11-19 04:18:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:29,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:30,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:30,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423954163] [2023-11-19 04:18:30,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423954163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:30,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:30,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:18:30,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61673406] [2023-11-19 04:18:30,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:30,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:30,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:30,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:30,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:30,293 INFO L87 Difference]: Start difference. First operand has 129 states, 115 states have (on average 2.765217391304348) internal successors, (318), 128 states have internal predecessors, (318), 0 states have call successors, (0), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:30,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:30,409 INFO L93 Difference]: Finished difference Result 111 states and 269 transitions. [2023-11-19 04:18:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:30,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2023-11-19 04:18:30,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:30,430 INFO L225 Difference]: With dead ends: 111 [2023-11-19 04:18:30,430 INFO L226 Difference]: Without dead ends: 111 [2023-11-19 04:18:30,433 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 04:18:30,440 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:30,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-19 04:18:30,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-11-19 04:18:30,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 100 states have (on average 2.69) internal successors, (269), 110 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:30,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 269 transitions. [2023-11-19 04:18:30,525 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 269 transitions. Word has length 2 [2023-11-19 04:18:30,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:30,526 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 269 transitions. [2023-11-19 04:18:30,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:30,527 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 269 transitions. [2023-11-19 04:18:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:18:30,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:30,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:18:30,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:18:30,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:30,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:30,537 INFO L85 PathProgramCache]: Analyzing trace with hash 931888, now seen corresponding path program 1 times [2023-11-19 04:18:30,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:30,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018041555] [2023-11-19 04:18:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:30,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:30,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:30,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018041555] [2023-11-19 04:18:30,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018041555] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:30,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105241988] [2023-11-19 04:18:30,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:30,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:30,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:30,706 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:30,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:18:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:30,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:18:30,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:30,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:30,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:18:30,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:30,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105241988] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:18:30,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1951704617] [2023-11-19 04:18:30,919 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:18:30,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:18:30,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 04:18:30,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140699413] [2023-11-19 04:18:30,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:18:30,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:18:30,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:30,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:18:30,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:18:30,927 INFO L87 Difference]: Start difference. First operand 111 states and 269 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:31,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:31,125 INFO L93 Difference]: Finished difference Result 117 states and 287 transitions. [2023-11-19 04:18:31,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:18:31,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 3 [2023-11-19 04:18:31,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:31,128 INFO L225 Difference]: With dead ends: 117 [2023-11-19 04:18:31,130 INFO L226 Difference]: Without dead ends: 117 [2023-11-19 04:18:31,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:18:31,133 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:31,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:18:31,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-19 04:18:31,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-11-19 04:18:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 106 states have (on average 2.707547169811321) internal successors, (287), 116 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:31,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 287 transitions. [2023-11-19 04:18:31,159 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 287 transitions. Word has length 3 [2023-11-19 04:18:31,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:31,160 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 287 transitions. [2023-11-19 04:18:31,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:31,161 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 287 transitions. [2023-11-19 04:18:31,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:18:31,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:31,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:18:31,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:31,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:31,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:31,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash 931876, now seen corresponding path program 1 times [2023-11-19 04:18:31,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:31,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200858795] [2023-11-19 04:18:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:31,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:31,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:31,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200858795] [2023-11-19 04:18:31,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200858795] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:31,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097546914] [2023-11-19 04:18:31,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:31,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:31,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:31,574 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:31,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:18:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:31,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:18:31,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:31,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:18:31,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097546914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:31,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:18:31,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 04:18:31,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789987183] [2023-11-19 04:18:31,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:31,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:18:31,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:31,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:18:31,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:18:31,707 INFO L87 Difference]: Start difference. First operand 117 states and 287 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:31,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:31,829 INFO L93 Difference]: Finished difference Result 115 states and 279 transitions. [2023-11-19 04:18:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:18:31,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2023-11-19 04:18:31,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:31,834 INFO L225 Difference]: With dead ends: 115 [2023-11-19 04:18:31,834 INFO L226 Difference]: Without dead ends: 115 [2023-11-19 04:18:31,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:18:31,838 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:31,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:31,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-19 04:18:31,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-19 04:18:31,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 106 states have (on average 2.6320754716981134) internal successors, (279), 114 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 279 transitions. [2023-11-19 04:18:31,866 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 279 transitions. Word has length 3 [2023-11-19 04:18:31,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:31,867 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 279 transitions. [2023-11-19 04:18:31,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:31,868 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 279 transitions. [2023-11-19 04:18:31,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:18:31,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:31,870 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2023-11-19 04:18:31,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:32,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:32,085 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:32,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:32,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1993792501, now seen corresponding path program 2 times [2023-11-19 04:18:32,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:32,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204681352] [2023-11-19 04:18:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:32,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:32,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:32,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204681352] [2023-11-19 04:18:32,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204681352] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:32,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589143436] [2023-11-19 04:18:32,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:18:32,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:32,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:32,301 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:32,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:18:32,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 04:18:32,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:18:32,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:18:32,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:18:32,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:18:32,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589143436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:32,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:18:32,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 04:18:32,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506390576] [2023-11-19 04:18:32,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:32,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:32,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:32,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:32,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:18:32,401 INFO L87 Difference]: Start difference. First operand 115 states and 279 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:32,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:32,464 INFO L93 Difference]: Finished difference Result 113 states and 277 transitions. [2023-11-19 04:18:32,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:32,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 04:18:32,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:32,466 INFO L225 Difference]: With dead ends: 113 [2023-11-19 04:18:32,467 INFO L226 Difference]: Without dead ends: 113 [2023-11-19 04:18:32,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:18:32,470 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:32,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:32,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-19 04:18:32,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2023-11-19 04:18:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 98 states have (on average 2.663265306122449) internal successors, (261), 104 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 261 transitions. [2023-11-19 04:18:32,495 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 261 transitions. Word has length 6 [2023-11-19 04:18:32,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:32,495 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 261 transitions. [2023-11-19 04:18:32,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:32,495 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 261 transitions. [2023-11-19 04:18:32,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:18:32,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:32,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:32,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:32,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:32,717 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:32,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:32,717 INFO L85 PathProgramCache]: Analyzing trace with hash -964112074, now seen corresponding path program 1 times [2023-11-19 04:18:32,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:32,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735313910] [2023-11-19 04:18:32,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:32,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:32,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:32,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735313910] [2023-11-19 04:18:32,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735313910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:32,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:32,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:18:32,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145113497] [2023-11-19 04:18:32,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:32,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:32,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:32,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:32,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:32,834 INFO L87 Difference]: Start difference. First operand 105 states and 261 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:32,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:32,925 INFO L93 Difference]: Finished difference Result 148 states and 370 transitions. [2023-11-19 04:18:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:32,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 04:18:32,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:32,927 INFO L225 Difference]: With dead ends: 148 [2023-11-19 04:18:32,927 INFO L226 Difference]: Without dead ends: 148 [2023-11-19 04:18:32,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:32,931 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:32,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:32,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-19 04:18:32,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 125. [2023-11-19 04:18:32,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 118 states have (on average 2.830508474576271) internal successors, (334), 124 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 334 transitions. [2023-11-19 04:18:32,955 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 334 transitions. Word has length 8 [2023-11-19 04:18:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:32,956 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 334 transitions. [2023-11-19 04:18:32,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:32,956 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 334 transitions. [2023-11-19 04:18:32,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:18:32,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:32,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:32,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:18:32,958 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:32,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:32,959 INFO L85 PathProgramCache]: Analyzing trace with hash -963089854, now seen corresponding path program 1 times [2023-11-19 04:18:32,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:32,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148543002] [2023-11-19 04:18:32,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:32,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:33,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:33,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148543002] [2023-11-19 04:18:33,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148543002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:33,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:33,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:18:33,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116935415] [2023-11-19 04:18:33,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:33,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:33,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:33,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:33,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:33,056 INFO L87 Difference]: Start difference. First operand 125 states and 334 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:33,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:33,124 INFO L93 Difference]: Finished difference Result 127 states and 336 transitions. [2023-11-19 04:18:33,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:33,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 04:18:33,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:33,126 INFO L225 Difference]: With dead ends: 127 [2023-11-19 04:18:33,126 INFO L226 Difference]: Without dead ends: 127 [2023-11-19 04:18:33,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:33,128 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:33,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:33,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-19 04:18:33,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-11-19 04:18:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 120 states have (on average 2.8) internal successors, (336), 126 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:33,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 336 transitions. [2023-11-19 04:18:33,142 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 336 transitions. Word has length 8 [2023-11-19 04:18:33,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:33,142 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 336 transitions. [2023-11-19 04:18:33,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:33,143 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 336 transitions. [2023-11-19 04:18:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:18:33,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:33,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:33,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:18:33,145 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:33,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:33,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1610171446, now seen corresponding path program 1 times [2023-11-19 04:18:33,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:33,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32150535] [2023-11-19 04:18:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:33,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:18:33,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32150535] [2023-11-19 04:18:33,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32150535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:33,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:33,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:18:33,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356463177] [2023-11-19 04:18:33,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:33,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:33,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:33,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:33,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:33,244 INFO L87 Difference]: Start difference. First operand 127 states and 336 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:33,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:33,348 INFO L93 Difference]: Finished difference Result 212 states and 571 transitions. [2023-11-19 04:18:33,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:33,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 04:18:33,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:33,354 INFO L225 Difference]: With dead ends: 212 [2023-11-19 04:18:33,354 INFO L226 Difference]: Without dead ends: 212 [2023-11-19 04:18:33,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:33,356 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:33,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:33,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-19 04:18:33,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 187. [2023-11-19 04:18:33,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 180 states have (on average 2.9277777777777776) internal successors, (527), 186 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:33,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 527 transitions. [2023-11-19 04:18:33,386 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 527 transitions. Word has length 10 [2023-11-19 04:18:33,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:33,387 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 527 transitions. [2023-11-19 04:18:33,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:33,387 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 527 transitions. [2023-11-19 04:18:33,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:18:33,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:33,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:33,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 04:18:33,389 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:33,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:33,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1655980664, now seen corresponding path program 1 times [2023-11-19 04:18:33,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:33,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343096620] [2023-11-19 04:18:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:33,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:18:33,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:33,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343096620] [2023-11-19 04:18:33,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343096620] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:33,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322361400] [2023-11-19 04:18:33,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:33,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:33,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:33,497 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:33,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:18:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:33,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:18:33,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:18:33,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:18:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:18:33,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322361400] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:18:33,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1546245225] [2023-11-19 04:18:33,719 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:18:33,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:18:33,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-19 04:18:33,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2789399] [2023-11-19 04:18:33,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:18:33,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:18:33,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:33,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:18:33,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:18:33,725 INFO L87 Difference]: Start difference. First operand 187 states and 527 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:33,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:33,837 INFO L93 Difference]: Finished difference Result 193 states and 533 transitions. [2023-11-19 04:18:33,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:18:33,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 04:18:33,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:33,841 INFO L225 Difference]: With dead ends: 193 [2023-11-19 04:18:33,841 INFO L226 Difference]: Without dead ends: 193 [2023-11-19 04:18:33,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:18:33,843 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:33,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-19 04:18:33,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-11-19 04:18:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 186 states have (on average 2.8655913978494625) internal successors, (533), 192 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:33,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 533 transitions. [2023-11-19 04:18:33,857 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 533 transitions. Word has length 11 [2023-11-19 04:18:33,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:33,857 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 533 transitions. [2023-11-19 04:18:33,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:33,858 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 533 transitions. [2023-11-19 04:18:33,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 04:18:33,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:33,860 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:33,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:34,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:34,085 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:34,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:34,085 INFO L85 PathProgramCache]: Analyzing trace with hash -193833348, now seen corresponding path program 2 times [2023-11-19 04:18:34,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:34,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965232889] [2023-11-19 04:18:34,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:34,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:18:34,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:34,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965232889] [2023-11-19 04:18:34,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965232889] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:34,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952813403] [2023-11-19 04:18:34,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:18:34,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:34,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:34,307 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:34,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:18:34,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 04:18:34,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:18:34,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:18:34,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 04:18:34,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:18:34,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952813403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:34,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:18:34,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-19 04:18:34,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034383328] [2023-11-19 04:18:34,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:34,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:18:34,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:34,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:18:34,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:18:34,494 INFO L87 Difference]: Start difference. First operand 193 states and 533 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:34,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:34,621 INFO L93 Difference]: Finished difference Result 196 states and 506 transitions. [2023-11-19 04:18:34,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:18:34,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 04:18:34,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:34,624 INFO L225 Difference]: With dead ends: 196 [2023-11-19 04:18:34,624 INFO L226 Difference]: Without dead ends: 196 [2023-11-19 04:18:34,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:18:34,627 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 36 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:34,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 5 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:34,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-19 04:18:34,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 133. [2023-11-19 04:18:34,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 129 states have (on average 2.5968992248062017) internal successors, (335), 132 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 335 transitions. [2023-11-19 04:18:34,643 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 335 transitions. Word has length 17 [2023-11-19 04:18:34,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:34,643 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 335 transitions. [2023-11-19 04:18:34,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:34,644 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 335 transitions. [2023-11-19 04:18:34,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:18:34,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:34,652 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:34,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:34,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:34,873 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:34,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:34,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1202235182, now seen corresponding path program 1 times [2023-11-19 04:18:34,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:34,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634582446] [2023-11-19 04:18:34,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:34,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 04:18:34,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:34,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634582446] [2023-11-19 04:18:34,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634582446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:34,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:34,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:18:34,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118408623] [2023-11-19 04:18:34,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:34,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:34,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:34,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:34,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:34,964 INFO L87 Difference]: Start difference. First operand 133 states and 335 transitions. Second operand has 3 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) [2023-11-19 04:18:35,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:35,048 INFO L93 Difference]: Finished difference Result 166 states and 399 transitions. [2023-11-19 04:18:35,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:35,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 19 [2023-11-19 04:18:35,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:35,051 INFO L225 Difference]: With dead ends: 166 [2023-11-19 04:18:35,051 INFO L226 Difference]: Without dead ends: 166 [2023-11-19 04:18:35,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:35,052 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:35,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:35,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-19 04:18:35,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 141. [2023-11-19 04:18:35,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 137 states have (on average 2.5839416058394162) internal successors, (354), 140 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:35,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 354 transitions. [2023-11-19 04:18:35,060 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 354 transitions. Word has length 19 [2023-11-19 04:18:35,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:35,061 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 354 transitions. [2023-11-19 04:18:35,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-19 04:18:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 354 transitions. [2023-11-19 04:18:35,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 04:18:35,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:35,063 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:35,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 04:18:35,063 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:35,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:35,064 INFO L85 PathProgramCache]: Analyzing trace with hash -838576457, now seen corresponding path program 1 times [2023-11-19 04:18:35,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:35,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557357605] [2023-11-19 04:18:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:35,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 04:18:35,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:35,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557357605] [2023-11-19 04:18:35,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557357605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:35,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:35,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:18:35,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124036538] [2023-11-19 04:18:35,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:35,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:18:35,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:35,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:18:35,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:18:35,175 INFO L87 Difference]: Start difference. First operand 141 states and 354 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:35,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:35,294 INFO L93 Difference]: Finished difference Result 183 states and 421 transitions. [2023-11-19 04:18:35,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:18:35,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-19 04:18:35,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:35,297 INFO L225 Difference]: With dead ends: 183 [2023-11-19 04:18:35,297 INFO L226 Difference]: Without dead ends: 177 [2023-11-19 04:18:35,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:18:35,298 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:35,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:35,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-19 04:18:35,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 141. [2023-11-19 04:18:35,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 137 states have (on average 2.5547445255474455) internal successors, (350), 140 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:35,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 350 transitions. [2023-11-19 04:18:35,307 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 350 transitions. Word has length 23 [2023-11-19 04:18:35,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:35,308 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 350 transitions. [2023-11-19 04:18:35,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:35,308 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 350 transitions. [2023-11-19 04:18:35,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 04:18:35,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:35,310 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:35,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 04:18:35,310 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:35,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:35,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2105439607, now seen corresponding path program 2 times [2023-11-19 04:18:35,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:35,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274859750] [2023-11-19 04:18:35,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:35,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 04:18:35,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:35,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274859750] [2023-11-19 04:18:35,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274859750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:35,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:35,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:18:35,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634181282] [2023-11-19 04:18:35,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:35,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:18:35,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:35,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:18:35,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:18:35,453 INFO L87 Difference]: Start difference. First operand 141 states and 350 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:35,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:35,579 INFO L93 Difference]: Finished difference Result 181 states and 422 transitions. [2023-11-19 04:18:35,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:18:35,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-19 04:18:35,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:35,582 INFO L225 Difference]: With dead ends: 181 [2023-11-19 04:18:35,582 INFO L226 Difference]: Without dead ends: 181 [2023-11-19 04:18:35,582 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 [2023-11-19 04:18:35,583 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:35,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:35,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-19 04:18:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 145. [2023-11-19 04:18:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 141 states have (on average 2.5531914893617023) internal successors, (360), 144 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2023-11-19 04:18:35,592 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 23 [2023-11-19 04:18:35,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:35,593 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2023-11-19 04:18:35,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2023-11-19 04:18:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 04:18:35,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:35,594 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:35,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 04:18:35,595 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:35,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:35,596 INFO L85 PathProgramCache]: Analyzing trace with hash 370371511, now seen corresponding path program 3 times [2023-11-19 04:18:35,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:35,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77332648] [2023-11-19 04:18:35,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:35,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 04:18:35,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:35,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77332648] [2023-11-19 04:18:35,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77332648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:35,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:35,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:18:35,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498412111] [2023-11-19 04:18:35,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:35,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:18:35,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:35,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:18:35,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:18:35,710 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:35,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:35,810 INFO L93 Difference]: Finished difference Result 176 states and 431 transitions. [2023-11-19 04:18:35,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:18:35,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-19 04:18:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:35,813 INFO L225 Difference]: With dead ends: 176 [2023-11-19 04:18:35,813 INFO L226 Difference]: Without dead ends: 176 [2023-11-19 04:18:35,814 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 [2023-11-19 04:18:35,814 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:35,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:35,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-19 04:18:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 141. [2023-11-19 04:18:35,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 137 states have (on average 2.5255474452554743) internal successors, (346), 140 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:35,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 346 transitions. [2023-11-19 04:18:35,823 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 346 transitions. Word has length 23 [2023-11-19 04:18:35,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:35,824 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 346 transitions. [2023-11-19 04:18:35,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:35,824 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 346 transitions. [2023-11-19 04:18:35,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 04:18:35,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:35,826 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:35,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 04:18:35,826 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:35,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:35,827 INFO L85 PathProgramCache]: Analyzing trace with hash -371466190, now seen corresponding path program 1 times [2023-11-19 04:18:35,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:35,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636850642] [2023-11-19 04:18:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:35,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 04:18:36,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:36,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636850642] [2023-11-19 04:18:36,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636850642] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:36,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630581596] [2023-11-19 04:18:36,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:36,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:36,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:36,092 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:36,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:18:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:36,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:18:36,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 04:18:36,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:18:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 04:18:36,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630581596] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:18:36,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1592021845] [2023-11-19 04:18:36,452 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:18:36,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:18:36,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-19 04:18:36,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438841070] [2023-11-19 04:18:36,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:18:36,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 04:18:36,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:36,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 04:18:36,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-19 04:18:36,456 INFO L87 Difference]: Start difference. First operand 141 states and 346 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:36,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:36,600 INFO L93 Difference]: Finished difference Result 143 states and 348 transitions. [2023-11-19 04:18:36,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:18:36,600 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 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 23 [2023-11-19 04:18:36,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:36,602 INFO L225 Difference]: With dead ends: 143 [2023-11-19 04:18:36,602 INFO L226 Difference]: Without dead ends: 143 [2023-11-19 04:18:36,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-19 04:18:36,603 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:36,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:36,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-19 04:18:36,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-11-19 04:18:36,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 139 states have (on average 2.5035971223021583) internal successors, (348), 142 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:36,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 348 transitions. [2023-11-19 04:18:36,611 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 348 transitions. Word has length 23 [2023-11-19 04:18:36,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:36,612 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 348 transitions. [2023-11-19 04:18:36,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:36,612 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 348 transitions. [2023-11-19 04:18:36,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 04:18:36,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:36,613 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:36,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:36,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 04:18:36,841 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:36,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:36,842 INFO L85 PathProgramCache]: Analyzing trace with hash -205277762, now seen corresponding path program 2 times [2023-11-19 04:18:36,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:36,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322133376] [2023-11-19 04:18:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:36,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 04:18:36,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:36,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322133376] [2023-11-19 04:18:36,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322133376] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:36,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339638380] [2023-11-19 04:18:36,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:18:36,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:36,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:36,942 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:36,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:18:37,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 04:18:37,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:18:37,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:18:37,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 04:18:37,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:18:37,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339638380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:37,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:18:37,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 04:18:37,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621026003] [2023-11-19 04:18:37,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:37,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:18:37,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:37,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:18:37,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:18:37,155 INFO L87 Difference]: Start difference. First operand 143 states and 348 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:37,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:37,260 INFO L93 Difference]: Finished difference Result 160 states and 374 transitions. [2023-11-19 04:18:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:18:37,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-19 04:18:37,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:37,262 INFO L225 Difference]: With dead ends: 160 [2023-11-19 04:18:37,262 INFO L226 Difference]: Without dead ends: 160 [2023-11-19 04:18:37,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:18:37,263 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:37,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:37,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-19 04:18:37,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 135. [2023-11-19 04:18:37,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 132 states have (on average 2.492424242424242) internal successors, (329), 134 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:37,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 329 transitions. [2023-11-19 04:18:37,272 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 329 transitions. Word has length 25 [2023-11-19 04:18:37,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:37,272 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 329 transitions. [2023-11-19 04:18:37,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:37,273 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 329 transitions. [2023-11-19 04:18:37,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 04:18:37,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:37,274 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:37,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-19 04:18:37,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 04:18:37,492 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:37,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:37,493 INFO L85 PathProgramCache]: Analyzing trace with hash -205277760, now seen corresponding path program 1 times [2023-11-19 04:18:37,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:37,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984646241] [2023-11-19 04:18:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:37,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:37,574 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-19 04:18:37,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:37,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984646241] [2023-11-19 04:18:37,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984646241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:37,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:37,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:18:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568898698] [2023-11-19 04:18:37,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:37,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:37,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:37,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:37,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:37,579 INFO L87 Difference]: Start difference. First operand 135 states and 329 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:37,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:37,654 INFO L93 Difference]: Finished difference Result 144 states and 336 transitions. [2023-11-19 04:18:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:37,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-19 04:18:37,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:37,657 INFO L225 Difference]: With dead ends: 144 [2023-11-19 04:18:37,657 INFO L226 Difference]: Without dead ends: 144 [2023-11-19 04:18:37,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:37,658 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:37,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:37,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-19 04:18:37,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 95. [2023-11-19 04:18:37,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 2.3440860215053765) internal successors, (218), 94 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:37,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 218 transitions. [2023-11-19 04:18:37,665 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 218 transitions. Word has length 25 [2023-11-19 04:18:37,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:37,666 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 218 transitions. [2023-11-19 04:18:37,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:37,666 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 218 transitions. [2023-11-19 04:18:37,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 04:18:37,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:37,667 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:37,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 04:18:37,668 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:37,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:37,669 INFO L85 PathProgramCache]: Analyzing trace with hash 962186045, now seen corresponding path program 1 times [2023-11-19 04:18:37,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:37,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630348058] [2023-11-19 04:18:37,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:37,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 04:18:37,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:37,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630348058] [2023-11-19 04:18:37,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630348058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:37,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:37,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:18:37,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480909772] [2023-11-19 04:18:37,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:37,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:18:37,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:37,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:18:37,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:18:37,938 INFO L87 Difference]: Start difference. First operand 95 states and 218 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:38,047 INFO L93 Difference]: Finished difference Result 136 states and 325 transitions. [2023-11-19 04:18:38,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:18:38,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 04:18:38,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:38,050 INFO L225 Difference]: With dead ends: 136 [2023-11-19 04:18:38,050 INFO L226 Difference]: Without dead ends: 136 [2023-11-19 04:18:38,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:18:38,051 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 49 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:38,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:38,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-19 04:18:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 94. [2023-11-19 04:18:38,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.3333333333333335) internal successors, (217), 93 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:38,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 217 transitions. [2023-11-19 04:18:38,058 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 217 transitions. Word has length 27 [2023-11-19 04:18:38,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:38,059 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 217 transitions. [2023-11-19 04:18:38,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:38,059 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 217 transitions. [2023-11-19 04:18:38,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 04:18:38,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:38,060 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:38,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 04:18:38,061 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 04:18:38,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:38,061 INFO L85 PathProgramCache]: Analyzing trace with hash 962186096, now seen corresponding path program 1 times [2023-11-19 04:18:38,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:38,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266029062] [2023-11-19 04:18:38,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:38,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:38,362 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 04:18:38,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:38,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266029062] [2023-11-19 04:18:38,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266029062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:38,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:38,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:18:38,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262320797] [2023-11-19 04:18:38,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:38,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:18:38,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:38,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:18:38,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:18:38,366 INFO L87 Difference]: Start difference. First operand 94 states and 217 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:38,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:38,485 INFO L93 Difference]: Finished difference Result 134 states and 323 transitions. [2023-11-19 04:18:38,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:18:38,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 04:18:38,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:38,488 INFO L225 Difference]: With dead ends: 134 [2023-11-19 04:18:38,488 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 04:18:38,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:18:38,491 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 44 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:38,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:38,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 04:18:38,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 04:18:38,493 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 04:18:38,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 04:18:38,496 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2023-11-19 04:18:38,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:38,497 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 04:18:38,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 04:18:38,497 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 04:18:38,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-11-19 04:18:38,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-11-19 04:18:38,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-11-19 04:18:38,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-11-19 04:18:38,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-11-19 04:18:38,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-11-19 04:18:38,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-11-19 04:18:38,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-11-19 04:18:38,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-11-19 04:18:38,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-11-19 04:18:38,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 16 remaining) [2023-11-19 04:18:38,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 16 remaining) [2023-11-19 04:18:38,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-11-19 04:18:38,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-11-19 04:18:38,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-11-19 04:18:38,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-11-19 04:18:38,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 04:18:38,512 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:38,518 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 04:18:38,518 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:18:38,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:18:38 BasicIcfg [2023-11-19 04:18:38,522 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:18:38,523 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:18:38,523 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:18:38,524 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:18:38,524 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:18:20" (3/4) ... [2023-11-19 04:18:38,526 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 04:18:38,531 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 04:18:38,532 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 04:18:38,540 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-19 04:18:38,541 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 04:18:38,541 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 04:18:38,542 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 04:18:38,690 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:18:38,691 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 04:18:38,691 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:18:38,692 INFO L158 Benchmark]: Toolchain (without parser) took 19587.62ms. Allocated memory was 165.7MB in the beginning and 247.5MB in the end (delta: 81.8MB). Free memory was 121.3MB in the beginning and 198.2MB in the end (delta: -76.8MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2023-11-19 04:18:38,692 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 107.0MB. Free memory is still 60.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:18:38,693 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.89ms. Allocated memory is still 165.7MB. Free memory was 121.3MB in the beginning and 109.5MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:18:38,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.56ms. Allocated memory is still 165.7MB. Free memory was 109.5MB in the beginning and 107.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:18:38,694 INFO L158 Benchmark]: Boogie Preprocessor took 37.60ms. Allocated memory is still 165.7MB. Free memory was 107.4MB in the beginning and 105.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:18:38,695 INFO L158 Benchmark]: RCFGBuilder took 576.53ms. Allocated memory is still 165.7MB. Free memory was 105.3MB in the beginning and 85.1MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 04:18:38,696 INFO L158 Benchmark]: TraceAbstraction took 18466.08ms. Allocated memory was 165.7MB in the beginning and 247.5MB in the end (delta: 81.8MB). Free memory was 84.4MB in the beginning and 203.4MB in the end (delta: -119.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:18:38,697 INFO L158 Benchmark]: Witness Printer took 167.95ms. Allocated memory is still 247.5MB. Free memory was 203.4MB in the beginning and 198.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 04:18:38,703 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 107.0MB. Free memory is still 60.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.89ms. Allocated memory is still 165.7MB. Free memory was 121.3MB in the beginning and 109.5MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.56ms. Allocated memory is still 165.7MB. Free memory was 109.5MB in the beginning and 107.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.60ms. Allocated memory is still 165.7MB. Free memory was 107.4MB in the beginning and 105.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 576.53ms. Allocated memory is still 165.7MB. Free memory was 105.3MB in the beginning and 85.1MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 18466.08ms. Allocated memory was 165.7MB in the beginning and 247.5MB in the end (delta: 81.8MB). Free memory was 84.4MB in the beginning and 203.4MB in the end (delta: -119.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 167.95ms. Allocated memory is still 247.5MB. Free memory was 203.4MB in the beginning and 198.2MB 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: 9.5s, 226 PlacesBefore, 38 PlacesAfterwards, 238 TransitionsBefore, 37 TransitionsAfterwards, 4400 CoEnabledTransitionPairs, 6 FixpointIterations, 140 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 24 TrivialYvCompositions, 22 ConcurrentYvCompositions, 13 ChoiceCompositions, 275 TotalNumberOfCompositions, 5206 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4382, independent: 4316, independent conditional: 0, independent unconditional: 4316, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3204, independent: 3178, independent conditional: 0, independent unconditional: 3178, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3204, independent: 3178, independent conditional: 0, independent unconditional: 3178, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 85, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4382, independent: 1138, independent conditional: 0, independent unconditional: 1138, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 3204, unknown conditional: 0, unknown unconditional: 3204] , Statistics on independence cache: Total cache size (in pairs): 100, Positive cache size: 93, Positive conditional cache size: 0, Positive unconditional cache size: 93, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: 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 5 procedures, 294 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 18.3s, OverallIterations: 18, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 311 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 311 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 83 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1428 IncrementalHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 83 mSolverCounterUnsat, 18 mSDtfsCounter, 1428 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred in iteration=8, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 367 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 371 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 380 ConstructedInterpolants, 0 QuantifiedInterpolants, 744 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1125 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 28 InterpolantComputations, 15 PerfectInterpolantSequences, 339/401 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 04:18:38,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e8b0d2-dc57-4f4f-a21c-a8109a161065/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