./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/bin/utaipan-verify-nQ1chXbOIh --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 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:08:38,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:08:38,990 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 15:08:38,995 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:08:38,996 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:08:39,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:08:39,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:08:39,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:08:39,023 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:08:39,023 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:08:39,024 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:08:39,024 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:08:39,025 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:08:39,025 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:08:39,026 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:08:39,026 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:08:39,027 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:08:39,027 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:08:39,028 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:08:39,029 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:08:39,029 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:08:39,033 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:08:39,034 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:08:39,034 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:08:39,035 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:08:39,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:08:39,036 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:08:39,036 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:08:39,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:08:39,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:08:39,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:08:39,038 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 15:08:39,038 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:08:39,038 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:08:39,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:08:39,039 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:08:39,039 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:08:39,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:08:39,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:08:39,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:08:39,040 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:08:39,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:08:39,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:08:39,041 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:08:39,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:08:39,041 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:08:39,041 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:08:39,041 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:08:39,041 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:08:39,042 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_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f [2023-12-02 15:08:39,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:08:39,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:08:39,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:08:39,277 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:08:39,277 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:08:39,278 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-12-02 15:08:42,091 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:08:42,264 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:08:42,265 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-12-02 15:08:42,272 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/bin/utaipan-verify-nQ1chXbOIh/data/3de19f5c6/fbf3581153634584951bc568e6ff63c7/FLAG1e98e401e [2023-12-02 15:08:42,284 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/bin/utaipan-verify-nQ1chXbOIh/data/3de19f5c6/fbf3581153634584951bc568e6ff63c7 [2023-12-02 15:08:42,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:08:42,287 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:08:42,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:08:42,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:08:42,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:08:42,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:08:42" (1/1) ... [2023-12-02 15:08:42,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ba8cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:08:42, skipping insertion in model container [2023-12-02 15:08:42,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:08:42" (1/1) ... [2023-12-02 15:08:42,322 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:08:42,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:08:42,496 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:08:42,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:08:42,539 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:08:42,539 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:08:42,545 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:08:42,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:08:42 WrapperNode [2023-12-02 15:08:42,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:08:42,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:08:42,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:08:42,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:08:42,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:08:42" (1/1) ... [2023-12-02 15:08:42,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:08:42" (1/1) ... [2023-12-02 15:08:42,596 INFO L138 Inliner]: procedures = 25, calls = 99, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 288 [2023-12-02 15:08:42,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:08:42,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:08:42,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:08:42,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:08:42,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:08:42" (1/1) ... [2023-12-02 15:08:42,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:08:42" (1/1) ... [2023-12-02 15:08:42,610 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:08:42" (1/1) ... [2023-12-02 15:08:42,610 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:08:42" (1/1) ... [2023-12-02 15:08:42,619 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:08:42" (1/1) ... [2023-12-02 15:08:42,622 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:08:42" (1/1) ... [2023-12-02 15:08:42,625 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:08:42" (1/1) ... [2023-12-02 15:08:42,627 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:08:42" (1/1) ... [2023-12-02 15:08:42,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:08:42,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:08:42,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:08:42,632 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:08:42,633 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:08:42" (1/1) ... [2023-12-02 15:08:42,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:08:42,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:08:42,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:08:42,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb428d0-08d2-43c4-aac4-0ad24fdc5222/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:08:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:08:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:08:42,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:08:42,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:08:42,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 15:08:42,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 15:08:42,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 15:08:42,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 15:08:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-02 15:08:42,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-02 15:08:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-12-02 15:08:42,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-12-02 15:08:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:08:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-12-02 15:08:42,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-12-02 15:08:42,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-12-02 15:08:42,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-12-02 15:08:42,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 15:08:42,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 15:08:42,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:08:42,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:08:42,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:08:42,701 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 15:08:42,805 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:08:42,807 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:08:43,171 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:08:43,442 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:08:43,443 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 15:08:43,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:08:43 BoogieIcfgContainer [2023-12-02 15:08:43,443 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:08:43,446 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:08:43,446 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:08:43,449 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:08:43,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:08:42" (1/3) ... [2023-12-02 15:08:43,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cdd72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:08:43, skipping insertion in model container [2023-12-02 15:08:43,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:08:42" (2/3) ... [2023-12-02 15:08:43,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cdd72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:08:43, skipping insertion in model container [2023-12-02 15:08:43,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:08:43" (3/3) ... [2023-12-02 15:08:43,452 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2023-12-02 15:08:43,462 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 15:08:43,473 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:08:43,473 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-12-02 15:08:43,473 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 15:08:43,573 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-12-02 15:08:43,605 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 108 places, 93 transitions, 252 flow [2023-12-02 15:08:55,284 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 311630 states, 311006 states have (on average 5.1254831096506175) internal successors, (1594056), 311629 states have internal predecessors, (1594056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:08:55,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:08:55,308 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;@36e9ea75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:08:55,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-12-02 15:08:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 311630 states, 311006 states have (on average 5.1254831096506175) internal successors, (1594056), 311629 states have internal predecessors, (1594056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:08:55,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 15:08:55,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:08:55,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:08:55,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 15:08:55,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:08:55,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1900359562, now seen corresponding path program 1 times [2023-12-02 15:08:55,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:08:55,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122652384] [2023-12-02 15:08:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:08:55,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:08:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:08:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:08:56,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:08:56,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122652384] [2023-12-02 15:08:56,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122652384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:08:56,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:08:56,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:08:56,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120631737] [2023-12-02 15:08:56,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:08:56,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:08:56,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:08:56,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:08:56,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:08:56,674 INFO L87 Difference]: Start difference. First operand has 311630 states, 311006 states have (on average 5.1254831096506175) internal successors, (1594056), 311629 states have internal predecessors, (1594056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:09:02,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:09:02,039 INFO L93 Difference]: Finished difference Result 289510 states and 1479022 transitions. [2023-12-02 15:09:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:09:02,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 15:09:02,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:09:05,008 INFO L225 Difference]: With dead ends: 289510 [2023-12-02 15:09:05,008 INFO L226 Difference]: Without dead ends: 289510 [2023-12-02 15:09:05,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:09:05,013 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 182 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:09:05,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 25 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:09:06,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289510 states. [2023-12-02 15:09:15,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289510 to 289510. [2023-12-02 15:09:16,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289510 states, 289011 states have (on average 5.117528398573064) internal successors, (1479022), 289509 states have internal predecessors, (1479022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:09:18,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289510 states to 289510 states and 1479022 transitions. [2023-12-02 15:09:18,884 INFO L78 Accepts]: Start accepts. Automaton has 289510 states and 1479022 transitions. Word has length 7 [2023-12-02 15:09:18,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:09:18,885 INFO L495 AbstractCegarLoop]: Abstraction has 289510 states and 1479022 transitions. [2023-12-02 15:09:18,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:09:18,886 INFO L276 IsEmpty]: Start isEmpty. Operand 289510 states and 1479022 transitions. [2023-12-02 15:09:18,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 15:09:18,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:09:18,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:09:18,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:09:18,888 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 15:09:18,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:09:18,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1900359563, now seen corresponding path program 1 times [2023-12-02 15:09:18,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:09:18,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071912021] [2023-12-02 15:09:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:09:18,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:09:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:09:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:09:19,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:09:19,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071912021] [2023-12-02 15:09:19,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071912021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:09:19,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:09:19,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:09:19,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887182803] [2023-12-02 15:09:19,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:09:19,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:09:19,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:09:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:09:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:09:19,040 INFO L87 Difference]: Start difference. First operand 289510 states and 1479022 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:09:24,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:09:24,481 INFO L93 Difference]: Finished difference Result 326218 states and 1659732 transitions. [2023-12-02 15:09:24,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:09:24,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 15:09:24,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:09:27,511 INFO L225 Difference]: With dead ends: 326218 [2023-12-02 15:09:27,511 INFO L226 Difference]: Without dead ends: 326218 [2023-12-02 15:09:27,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:09:27,513 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 325 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:09:27,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 99 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:09:28,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326218 states. [2023-12-02 15:09:38,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326218 to 276870. [2023-12-02 15:09:39,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276870 states, 276521 states have (on average 5.145656206942691) internal successors, (1422882), 276869 states have internal predecessors, (1422882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:09:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276870 states to 276870 states and 1422882 transitions. [2023-12-02 15:09:41,752 INFO L78 Accepts]: Start accepts. Automaton has 276870 states and 1422882 transitions. Word has length 7 [2023-12-02 15:09:41,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:09:41,752 INFO L495 AbstractCegarLoop]: Abstraction has 276870 states and 1422882 transitions. [2023-12-02 15:09:41,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:09:41,752 INFO L276 IsEmpty]: Start isEmpty. Operand 276870 states and 1422882 transitions. [2023-12-02 15:09:41,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:09:41,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:09:41,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:09:41,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:09:41,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread5Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 15:09:41,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:09:41,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1913822468, now seen corresponding path program 1 times [2023-12-02 15:09:41,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:09:41,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730771610] [2023-12-02 15:09:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:09:41,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:09:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:09:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:09:41,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:09:41,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730771610] [2023-12-02 15:09:41,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730771610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:09:41,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:09:41,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:09:41,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488137582] [2023-12-02 15:09:41,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:09:41,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:09:41,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:09:41,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:09:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:09:41,836 INFO L87 Difference]: Start difference. First operand 276870 states and 1422882 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:09:45,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:09:45,052 INFO L93 Difference]: Finished difference Result 257214 states and 1320184 transitions. [2023-12-02 15:09:45,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:09:45,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-02 15:09:45,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:09:47,790 INFO L225 Difference]: With dead ends: 257214 [2023-12-02 15:09:47,790 INFO L226 Difference]: Without dead ends: 257214 [2023-12-02 15:09:47,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:09:47,792 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 179 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:09:47,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 25 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:09:48,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257214 states. [2023-12-02 15:09:56,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257214 to 257214. [2023-12-02 15:09:57,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257214 states, 256935 states have (on average 5.138202269056376) internal successors, (1320184), 257213 states have internal predecessors, (1320184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:10:00,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257214 states to 257214 states and 1320184 transitions. [2023-12-02 15:10:00,086 INFO L78 Accepts]: Start accepts. Automaton has 257214 states and 1320184 transitions. Word has length 9 [2023-12-02 15:10:00,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:10:00,086 INFO L495 AbstractCegarLoop]: Abstraction has 257214 states and 1320184 transitions. [2023-12-02 15:10:00,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:10:00,087 INFO L276 IsEmpty]: Start isEmpty. Operand 257214 states and 1320184 transitions. [2023-12-02 15:10:00,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:10:00,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:10:00,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:10:00,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:10:00,089 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread5Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 15:10:00,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:10:00,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1913822469, now seen corresponding path program 1 times [2023-12-02 15:10:00,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:10:00,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144123529] [2023-12-02 15:10:00,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:10:00,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:10:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:10:00,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:10:00,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:10:00,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144123529] [2023-12-02 15:10:00,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144123529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:10:00,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:10:00,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:10:00,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618633287] [2023-12-02 15:10:00,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:10:00,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:10:00,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:10:00,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:10:00,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:10:00,175 INFO L87 Difference]: Start difference. First operand 257214 states and 1320184 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:10:04,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:10:04,063 INFO L93 Difference]: Finished difference Result 289086 states and 1478880 transitions. [2023-12-02 15:10:04,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:10:04,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-02 15:10:04,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:10:06,557 INFO L225 Difference]: With dead ends: 289086 [2023-12-02 15:10:06,558 INFO L226 Difference]: Without dead ends: 289086 [2023-12-02 15:10:06,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:10:06,559 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 317 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:10:06,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 99 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:10:07,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289086 states. [2023-12-02 15:10:15,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289086 to 245982. [2023-12-02 15:10:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245982 states, 245787 states have (on average 5.1670918315452) internal successors, (1270004), 245981 states have internal predecessors, (1270004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:10:17,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245982 states to 245982 states and 1270004 transitions. [2023-12-02 15:10:17,983 INFO L78 Accepts]: Start accepts. Automaton has 245982 states and 1270004 transitions. Word has length 9 [2023-12-02 15:10:17,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:10:17,983 INFO L495 AbstractCegarLoop]: Abstraction has 245982 states and 1270004 transitions. [2023-12-02 15:10:17,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:10:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand 245982 states and 1270004 transitions. [2023-12-02 15:10:17,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:10:17,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:10:17,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:10:17,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 15:10:17,985 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 15:10:17,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:10:17,986 INFO L85 PathProgramCache]: Analyzing trace with hash 880119367, now seen corresponding path program 1 times [2023-12-02 15:10:17,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:10:17,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358706840] [2023-12-02 15:10:17,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:10:17,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:10:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:10:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:10:18,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:10:18,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358706840] [2023-12-02 15:10:18,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358706840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:10:18,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:10:18,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:10:18,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666975849] [2023-12-02 15:10:18,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:10:18,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:10:18,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:10:18,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:10:18,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:10:18,052 INFO L87 Difference]: Start difference. First operand 245982 states and 1270004 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:10:21,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:10:21,184 INFO L93 Difference]: Finished difference Result 230538 states and 1189062 transitions. [2023-12-02 15:10:21,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:10:21,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-02 15:10:21,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:10:23,515 INFO L225 Difference]: With dead ends: 230538 [2023-12-02 15:10:23,515 INFO L226 Difference]: Without dead ends: 230538 [2023-12-02 15:10:23,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:10:23,516 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 176 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:10:23,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 25 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:10:24,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230538 states. [2023-12-02 15:10:31,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230538 to 230538. [2023-12-02 15:10:31,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230538 states, 230371 states have (on average 5.161509044107114) internal successors, (1189062), 230537 states have internal predecessors, (1189062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:10:34,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230538 states to 230538 states and 1189062 transitions. [2023-12-02 15:10:34,286 INFO L78 Accepts]: Start accepts. Automaton has 230538 states and 1189062 transitions. Word has length 9 [2023-12-02 15:10:34,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:10:34,287 INFO L495 AbstractCegarLoop]: Abstraction has 230538 states and 1189062 transitions. [2023-12-02 15:10:34,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:10:34,287 INFO L276 IsEmpty]: Start isEmpty. Operand 230538 states and 1189062 transitions. [2023-12-02 15:10:34,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:10:34,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:10:34,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:10:34,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 15:10:34,289 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 15:10:34,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:10:34,290 INFO L85 PathProgramCache]: Analyzing trace with hash 880119368, now seen corresponding path program 1 times [2023-12-02 15:10:34,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:10:34,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105615118] [2023-12-02 15:10:34,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:10:34,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:10:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:10:34,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:10:34,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:10:34,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105615118] [2023-12-02 15:10:34,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105615118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:10:34,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:10:34,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:10:34,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007399438] [2023-12-02 15:10:34,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:10:34,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:10:34,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:10:34,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:10:34,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:10:34,384 INFO L87 Difference]: Start difference. First operand 230538 states and 1189062 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:10:37,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:10:37,677 INFO L93 Difference]: Finished difference Result 236154 states and 1213390 transitions. [2023-12-02 15:10:37,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:10:37,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-02 15:10:37,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:10:39,173 INFO L225 Difference]: With dead ends: 236154 [2023-12-02 15:10:39,174 INFO L226 Difference]: Without dead ends: 236154 [2023-12-02 15:10:39,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:10:39,175 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 147 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:10:39,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 52 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:10:40,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236154 states. [2023-12-02 15:10:47,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236154 to 223518. [2023-12-02 15:10:47,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223518 states, 223365 states have (on average 5.149544467575493) internal successors, (1150228), 223517 states have internal predecessors, (1150228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)