./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array.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_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/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_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/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_8ffc601f-1eb5-4025-a48b-24f7163a7080/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 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:49:40,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:49:40,478 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 14:49:40,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:49:40,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:49:40,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:49:40,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:49:40,514 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:49:40,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:49:40,516 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:49:40,516 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:49:40,517 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:49:40,517 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:49:40,518 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:49:40,519 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:49:40,519 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:49:40,520 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:49:40,520 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:49:40,521 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:49:40,521 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:49:40,522 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:49:40,523 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:49:40,524 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:49:40,524 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:49:40,524 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:49:40,525 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:49:40,525 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:49:40,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:49:40,526 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:49:40,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:49:40,527 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:49:40,527 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 14:49:40,528 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:49:40,528 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:49:40,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:49:40,528 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:49:40,529 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:49:40,529 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:49:40,529 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:49:40,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:49:40,530 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:49:40,530 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:49:40,530 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:49:40,530 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:49:40,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:49:40,531 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:49:40,531 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:49:40,531 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:49:40,531 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:49:40,532 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_8ffc601f-1eb5-4025-a48b-24f7163a7080/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 [2023-12-02 14:49:40,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:49:40,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:49:40,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:49:40,784 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:49:40,784 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:49:40,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2023-12-02 14:49:43,565 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:49:43,759 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:49:43,760 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2023-12-02 14:49:43,769 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/data/904f52a41/0b4bb155ab61484aa2e9a1634a5f9653/FLAGcd7fd643d [2023-12-02 14:49:43,783 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/data/904f52a41/0b4bb155ab61484aa2e9a1634a5f9653 [2023-12-02 14:49:43,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:49:43,788 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:49:43,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:49:43,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:49:43,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:49:43,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:49:43" (1/1) ... [2023-12-02 14:49:43,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b880ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:49:43, skipping insertion in model container [2023-12-02 14:49:43,798 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:49:43" (1/1) ... [2023-12-02 14:49:43,825 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:49:44,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:49:44,034 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:49:44,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:49:44,071 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:49:44,071 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:49:44,079 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:49:44,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:49:44 WrapperNode [2023-12-02 14:49:44,080 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:49:44,081 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:49:44,082 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:49:44,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:49:44,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:49:44" (1/1) ... [2023-12-02 14:49:44,099 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:49:44" (1/1) ... [2023-12-02 14:49:44,124 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 108 [2023-12-02 14:49:44,125 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:49:44,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:49:44,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:49:44,126 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:49:44,136 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:49:44" (1/1) ... [2023-12-02 14:49:44,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:49:44" (1/1) ... [2023-12-02 14:49:44,139 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:49:44" (1/1) ... [2023-12-02 14:49:44,140 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:49:44" (1/1) ... [2023-12-02 14:49:44,148 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:49:44" (1/1) ... [2023-12-02 14:49:44,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:49:44" (1/1) ... [2023-12-02 14:49:44,154 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:49:44" (1/1) ... [2023-12-02 14:49:44,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:49:44" (1/1) ... [2023-12-02 14:49:44,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:49:44,160 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:49:44,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:49:44,160 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:49:44,161 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:49:44" (1/1) ... [2023-12-02 14:49:44,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:49:44,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:44,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:49:44,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:49:44,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:49:44,240 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 14:49:44,240 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 14:49:44,240 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 14:49:44,240 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 14:49:44,240 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-02 14:49:44,240 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-02 14:49:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:49:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:49:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:49:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 14:49:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 14:49:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 14:49:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:49:44,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:49:44,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:49:44,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:49:44,243 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 14:49:44,351 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:49:44,353 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:49:44,661 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:49:44,861 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:49:44,862 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 14:49:44,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:49:44 BoogieIcfgContainer [2023-12-02 14:49:44,862 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:49:44,864 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:49:44,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:49:44,867 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:49:44,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:49:43" (1/3) ... [2023-12-02 14:49:44,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28778c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:49:44, skipping insertion in model container [2023-12-02 14:49:44,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:49:44" (2/3) ... [2023-12-02 14:49:44,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28778c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:49:44, skipping insertion in model container [2023-12-02 14:49:44,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:49:44" (3/3) ... [2023-12-02 14:49:44,869 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2023-12-02 14:49:44,876 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 14:49:44,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:49:44,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-12-02 14:49:44,883 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 14:49:44,929 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-12-02 14:49:44,953 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 49 transitions, 119 flow [2023-12-02 14:49:45,058 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1819 states, 1791 states have (on average 3.4271356783919598) internal successors, (6138), 1818 states have internal predecessors, (6138), 0 states have call successors, (0), 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 14:49:45,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:49:45,079 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;@38fd5fc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:49:45,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-12-02 14:49:45,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 1819 states, 1791 states have (on average 3.4271356783919598) internal successors, (6138), 1818 states have internal predecessors, (6138), 0 states have call successors, (0), 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 14:49:45,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 14:49:45,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:45,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 14:49:45,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:45,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash 486658, now seen corresponding path program 1 times [2023-12-02 14:49:45,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:45,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745497166] [2023-12-02 14:49:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:45,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:45,343 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 14:49:45,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:45,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745497166] [2023-12-02 14:49:45,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745497166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:49:45,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:49:45,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:49:45,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414668440] [2023-12-02 14:49:45,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:49:45,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:49:45,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:45,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:49:45,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:49:45,379 INFO L87 Difference]: Start difference. First operand has 1819 states, 1791 states have (on average 3.4271356783919598) internal successors, (6138), 1818 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.0) 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) [2023-12-02 14:49:45,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:45,547 INFO L93 Difference]: Finished difference Result 1822 states and 6142 transitions. [2023-12-02 14:49:45,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:49:45,549 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 [2023-12-02 14:49:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:45,582 INFO L225 Difference]: With dead ends: 1822 [2023-12-02 14:49:45,582 INFO L226 Difference]: Without dead ends: 1822 [2023-12-02 14:49:45,584 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 14:49:45,587 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:45,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 50 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:49:45,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2023-12-02 14:49:45,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1822. [2023-12-02 14:49:45,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1794 states have (on average 3.423634336677815) internal successors, (6142), 1821 states have internal predecessors, (6142), 0 states have call successors, (0), 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 14:49:45,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 6142 transitions. [2023-12-02 14:49:45,714 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 6142 transitions. Word has length 3 [2023-12-02 14:49:45,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:45,714 INFO L495 AbstractCegarLoop]: Abstraction has 1822 states and 6142 transitions. [2023-12-02 14:49:45,715 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) [2023-12-02 14:49:45,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 6142 transitions. [2023-12-02 14:49:45,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 14:49:45,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:45,715 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-12-02 14:49:45,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:49:45,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:45,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:45,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1613602677, now seen corresponding path program 1 times [2023-12-02 14:49:45,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:45,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818000037] [2023-12-02 14:49:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:45,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:45,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:45,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818000037] [2023-12-02 14:49:45,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818000037] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:49:45,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342602096] [2023-12-02 14:49:45,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:45,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:45,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:45,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:49:45,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:49:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:45,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 14:49:45,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:46,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:49:46,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342602096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:49:46,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:49:46,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-12-02 14:49:46,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058539597] [2023-12-02 14:49:46,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:49:46,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:49:46,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:46,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:49:46,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:49:46,005 INFO L87 Difference]: Start difference. First operand 1822 states and 6142 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:49:46,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:46,130 INFO L93 Difference]: Finished difference Result 1821 states and 6141 transitions. [2023-12-02 14:49:46,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:49:46,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 14:49:46,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:46,144 INFO L225 Difference]: With dead ends: 1821 [2023-12-02 14:49:46,144 INFO L226 Difference]: Without dead ends: 1821 [2023-12-02 14:49:46,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-02 14:49:46,146 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:46,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 60 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:49:46,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2023-12-02 14:49:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1821. [2023-12-02 14:49:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1794 states have (on average 3.423076923076923) internal successors, (6141), 1820 states have internal predecessors, (6141), 0 states have call successors, (0), 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 14:49:46,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 6141 transitions. [2023-12-02 14:49:46,237 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 6141 transitions. Word has length 6 [2023-12-02 14:49:46,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:46,237 INFO L495 AbstractCegarLoop]: Abstraction has 1821 states and 6141 transitions. [2023-12-02 14:49:46,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:49:46,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 6141 transitions. [2023-12-02 14:49:46,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 14:49:46,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:46,239 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-12-02 14:49:46,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:49:46,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:46,441 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:46,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:46,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1517924086, now seen corresponding path program 1 times [2023-12-02 14:49:46,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:46,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455298390] [2023-12-02 14:49:46,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:46,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:46,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:46,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455298390] [2023-12-02 14:49:46,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455298390] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:49:46,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965820301] [2023-12-02 14:49:46,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:46,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:46,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:46,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:49:46,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 14:49:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:46,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 14:49:46,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:46,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:49:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:46,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965820301] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:49:46,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1742147219] [2023-12-02 14:49:46,705 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) [2023-12-02 14:49:46,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:49:46,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-12-02 14:49:46,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996224515] [2023-12-02 14:49:46,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:49:46,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 14:49:46,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:46,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 14:49:46,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-02 14:49:46,708 INFO L87 Difference]: Start difference. First operand 1821 states and 6141 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:49:46,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:46,913 INFO L93 Difference]: Finished difference Result 1830 states and 6153 transitions. [2023-12-02 14:49:46,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 14:49:46,914 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 14:49:46,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:46,931 INFO L225 Difference]: With dead ends: 1830 [2023-12-02 14:49:46,932 INFO L226 Difference]: Without dead ends: 1830 [2023-12-02 14:49:46,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-12-02 14:49:46,933 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:46,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 125 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:49:46,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2023-12-02 14:49:47,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1830. [2023-12-02 14:49:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1803 states have (on average 3.4126455906821964) internal successors, (6153), 1829 states have internal predecessors, (6153), 0 states have call successors, (0), 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 14:49:47,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 6153 transitions. [2023-12-02 14:49:47,033 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 6153 transitions. Word has length 7 [2023-12-02 14:49:47,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:47,033 INFO L495 AbstractCegarLoop]: Abstraction has 1830 states and 6153 transitions. [2023-12-02 14:49:47,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:49:47,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 6153 transitions. [2023-12-02 14:49:47,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 14:49:47,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:47,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:49:47,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 14:49:47,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:47,236 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:47,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:47,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1910507382, now seen corresponding path program 1 times [2023-12-02 14:49:47,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:47,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133347863] [2023-12-02 14:49:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:47,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:47,302 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 14:49:47,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:47,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133347863] [2023-12-02 14:49:47,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133347863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:49:47,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:49:47,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:49:47,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348896786] [2023-12-02 14:49:47,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:49:47,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:49:47,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:47,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:49:47,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:49:47,304 INFO L87 Difference]: Start difference. First operand 1830 states and 6153 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2023-12-02 14:49:47,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:47,478 INFO L93 Difference]: Finished difference Result 2740 states and 9458 transitions. [2023-12-02 14:49:47,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:49:47,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2023-12-02 14:49:47,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:47,507 INFO L225 Difference]: With dead ends: 2740 [2023-12-02 14:49:47,507 INFO L226 Difference]: Without dead ends: 2740 [2023-12-02 14:49:47,507 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 [2023-12-02 14:49:47,509 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 49 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:47,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 71 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:49:47,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2023-12-02 14:49:47,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2740. [2023-12-02 14:49:47,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2740 states, 2713 states have (on average 3.4861776631035752) internal successors, (9458), 2739 states have internal predecessors, (9458), 0 states have call successors, (0), 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 14:49:47,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 9458 transitions. [2023-12-02 14:49:47,628 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 9458 transitions. Word has length 8 [2023-12-02 14:49:47,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:47,628 INFO L495 AbstractCegarLoop]: Abstraction has 2740 states and 9458 transitions. [2023-12-02 14:49:47,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2023-12-02 14:49:47,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 9458 transitions. [2023-12-02 14:49:47,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 14:49:47,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:47,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:49:47,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 14:49:47,631 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:47,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:47,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1398843988, now seen corresponding path program 1 times [2023-12-02 14:49:47,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:47,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9438761] [2023-12-02 14:49:47,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:47,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:47,698 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 14:49:47,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:47,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9438761] [2023-12-02 14:49:47,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9438761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:49:47,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:49:47,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:49:47,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805565279] [2023-12-02 14:49:47,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:49:47,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:49:47,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:47,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:49:47,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:49:47,701 INFO L87 Difference]: Start difference. First operand 2740 states and 9458 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2023-12-02 14:49:47,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:47,892 INFO L93 Difference]: Finished difference Result 4230 states and 14952 transitions. [2023-12-02 14:49:47,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:49:47,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 [2023-12-02 14:49:47,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:47,936 INFO L225 Difference]: With dead ends: 4230 [2023-12-02 14:49:47,936 INFO L226 Difference]: Without dead ends: 4230 [2023-12-02 14:49:47,937 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 [2023-12-02 14:49:47,938 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 49 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:47,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 71 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:49:47,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2023-12-02 14:49:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 4230. [2023-12-02 14:49:48,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4203 states have (on average 3.5574589578872233) internal successors, (14952), 4229 states have internal predecessors, (14952), 0 states have call successors, (0), 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 14:49:48,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 14952 transitions. [2023-12-02 14:49:48,145 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 14952 transitions. Word has length 10 [2023-12-02 14:49:48,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:48,146 INFO L495 AbstractCegarLoop]: Abstraction has 4230 states and 14952 transitions. [2023-12-02 14:49:48,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2023-12-02 14:49:48,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 14952 transitions. [2023-12-02 14:49:48,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 14:49:48,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:48,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:49:48,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 14:49:48,151 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:48,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:48,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1399985562, now seen corresponding path program 1 times [2023-12-02 14:49:48,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:48,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692663656] [2023-12-02 14:49:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:48,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:48,229 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 14:49:48,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:48,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692663656] [2023-12-02 14:49:48,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692663656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:49:48,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:49:48,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:49:48,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223992675] [2023-12-02 14:49:48,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:49:48,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:49:48,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:48,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:49:48,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:49:48,232 INFO L87 Difference]: Start difference. First operand 4230 states and 14952 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:49:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:48,304 INFO L93 Difference]: Finished difference Result 4230 states and 14951 transitions. [2023-12-02 14:49:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:49:48,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 14:49:48,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:48,335 INFO L225 Difference]: With dead ends: 4230 [2023-12-02 14:49:48,336 INFO L226 Difference]: Without dead ends: 4230 [2023-12-02 14:49:48,336 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 [2023-12-02 14:49:48,337 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:48,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 32 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:49:48,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2023-12-02 14:49:48,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 4230. [2023-12-02 14:49:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4203 states have (on average 3.557221032595765) internal successors, (14951), 4229 states have internal predecessors, (14951), 0 states have call successors, (0), 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 14:49:48,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 14951 transitions. [2023-12-02 14:49:48,565 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 14951 transitions. Word has length 12 [2023-12-02 14:49:48,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:48,565 INFO L495 AbstractCegarLoop]: Abstraction has 4230 states and 14951 transitions. [2023-12-02 14:49:48,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:49:48,566 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 14951 transitions. [2023-12-02 14:49:48,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 14:49:48,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:48,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:49:48,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 14:49:48,570 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:48,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:48,570 INFO L85 PathProgramCache]: Analyzing trace with hash 742246739, now seen corresponding path program 1 times [2023-12-02 14:49:48,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:48,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324101453] [2023-12-02 14:49:48,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:48,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:49:48,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:48,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324101453] [2023-12-02 14:49:48,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324101453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:49:48,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:49:48,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:49:48,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887177949] [2023-12-02 14:49:48,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:49:48,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:49:48,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:48,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:49:48,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:49:48,664 INFO L87 Difference]: Start difference. First operand 4230 states and 14951 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:49:48,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:48,833 INFO L93 Difference]: Finished difference Result 3808 states and 13433 transitions. [2023-12-02 14:49:48,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:49:48,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 14:49:48,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:48,894 INFO L225 Difference]: With dead ends: 3808 [2023-12-02 14:49:48,894 INFO L226 Difference]: Without dead ends: 3808 [2023-12-02 14:49:48,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 14:49:48,895 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 82 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:48,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 62 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:49:48,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2023-12-02 14:49:48,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 3808. [2023-12-02 14:49:49,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3808 states, 3790 states have (on average 3.5443271767810027) internal successors, (13433), 3807 states have internal predecessors, (13433), 0 states have call successors, (0), 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 14:49:49,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3808 states to 3808 states and 13433 transitions. [2023-12-02 14:49:49,023 INFO L78 Accepts]: Start accepts. Automaton has 3808 states and 13433 transitions. Word has length 15 [2023-12-02 14:49:49,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:49,024 INFO L495 AbstractCegarLoop]: Abstraction has 3808 states and 13433 transitions. [2023-12-02 14:49:49,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:49:49,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3808 states and 13433 transitions. [2023-12-02 14:49:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 14:49:49,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:49,027 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:49:49,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 14:49:49,027 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:49,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash 499502473, now seen corresponding path program 1 times [2023-12-02 14:49:49,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:49,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415918315] [2023-12-02 14:49:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:49,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:49,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:49:49,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:49,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415918315] [2023-12-02 14:49:49,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415918315] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:49:49,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147249896] [2023-12-02 14:49:49,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:49,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:49,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:49,131 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:49:49,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 14:49:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:49,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 14:49:49,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:49,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:49:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:49,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147249896] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:49:49,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [859109284] [2023-12-02 14:49:49,584 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) [2023-12-02 14:49:49,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:49:49,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2023-12-02 14:49:49,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679950333] [2023-12-02 14:49:49,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:49:49,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 14:49:49,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:49,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 14:49:49,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-12-02 14:49:49,587 INFO L87 Difference]: Start difference. First operand 3808 states and 13433 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 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 14:49:50,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:50,290 INFO L93 Difference]: Finished difference Result 5821 states and 20361 transitions. [2023-12-02 14:49:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 14:49:50,291 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 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 16 [2023-12-02 14:49:50,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:50,319 INFO L225 Difference]: With dead ends: 5821 [2023-12-02 14:49:50,319 INFO L226 Difference]: Without dead ends: 5807 [2023-12-02 14:49:50,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2023-12-02 14:49:50,320 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 343 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:50,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 474 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 14:49:50,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5807 states. [2023-12-02 14:49:50,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5807 to 5319. [2023-12-02 14:49:50,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 5307 states have (on average 3.5732052006783492) internal successors, (18963), 5318 states have internal predecessors, (18963), 0 states have call successors, (0), 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 14:49:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 18963 transitions. [2023-12-02 14:49:50,575 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 18963 transitions. Word has length 16 [2023-12-02 14:49:50,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:50,576 INFO L495 AbstractCegarLoop]: Abstraction has 5319 states and 18963 transitions. [2023-12-02 14:49:50,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 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 14:49:50,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 18963 transitions. [2023-12-02 14:49:50,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 14:49:50,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:50,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:49:50,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 14:49:50,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:50,808 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:50,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:50,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1534812955, now seen corresponding path program 1 times [2023-12-02 14:49:50,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:50,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674900570] [2023-12-02 14:49:50,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:50,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:50,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:50,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674900570] [2023-12-02 14:49:50,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674900570] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:49:50,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179264663] [2023-12-02 14:49:50,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:50,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:50,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:50,974 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:49:50,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 14:49:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:51,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 14:49:51,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:49:51,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:49:51,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179264663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:49:51,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:49:51,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-12-02 14:49:51,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760897993] [2023-12-02 14:49:51,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:49:51,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:49:51,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:51,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:49:51,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-02 14:49:51,160 INFO L87 Difference]: Start difference. First operand 5319 states and 18963 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 14:49:51,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:51,408 INFO L93 Difference]: Finished difference Result 5319 states and 19533 transitions. [2023-12-02 14:49:51,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:49:51,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-12-02 14:49:51,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:51,431 INFO L225 Difference]: With dead ends: 5319 [2023-12-02 14:49:51,431 INFO L226 Difference]: Without dead ends: 5163 [2023-12-02 14:49:51,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-12-02 14:49:51,432 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 115 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:51,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 50 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:49:51,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5163 states. [2023-12-02 14:49:51,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5163 to 4593. [2023-12-02 14:49:51,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4593 states, 4587 states have (on average 3.5362982341399607) internal successors, (16221), 4592 states have internal predecessors, (16221), 0 states have call successors, (0), 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 14:49:51,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4593 states to 4593 states and 16221 transitions. [2023-12-02 14:49:51,594 INFO L78 Accepts]: Start accepts. Automaton has 4593 states and 16221 transitions. Word has length 16 [2023-12-02 14:49:51,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:51,594 INFO L495 AbstractCegarLoop]: Abstraction has 4593 states and 16221 transitions. [2023-12-02 14:49:51,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 14:49:51,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4593 states and 16221 transitions. [2023-12-02 14:49:51,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 14:49:51,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:51,597 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1] [2023-12-02 14:49:51,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 14:49:51,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 14:49:51,798 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:51,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:51,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1377253667, now seen corresponding path program 2 times [2023-12-02 14:49:51,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:51,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3660155] [2023-12-02 14:49:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:51,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:51,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:51,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3660155] [2023-12-02 14:49:51,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3660155] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:49:51,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523801254] [2023-12-02 14:49:51,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:49:51,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:51,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:51,952 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:49:51,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 14:49:52,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 14:49:52,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:49:52,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 14:49:52,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:52,085 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 14:49:52,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:49:52,117 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 14:49:52,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523801254] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:49:52,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1687243105] [2023-12-02 14:49:52,118 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) [2023-12-02 14:49:52,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:49:52,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-12-02 14:49:52,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707213950] [2023-12-02 14:49:52,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:49:52,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 14:49:52,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:52,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 14:49:52,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-02 14:49:52,120 INFO L87 Difference]: Start difference. First operand 4593 states and 16221 transitions. Second operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 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 14:49:52,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:52,366 INFO L93 Difference]: Finished difference Result 4595 states and 16224 transitions. [2023-12-02 14:49:52,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 14:49:52,366 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 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 16 [2023-12-02 14:49:52,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:52,429 INFO L225 Difference]: With dead ends: 4595 [2023-12-02 14:49:52,429 INFO L226 Difference]: Without dead ends: 4595 [2023-12-02 14:49:52,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2023-12-02 14:49:52,430 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:52,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 84 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:49:52,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2023-12-02 14:49:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 4584. [2023-12-02 14:49:52,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4584 states, 4579 states have (on average 3.5400742520200916) internal successors, (16210), 4583 states have internal predecessors, (16210), 0 states have call successors, (0), 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 14:49:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4584 states to 4584 states and 16210 transitions. [2023-12-02 14:49:52,565 INFO L78 Accepts]: Start accepts. Automaton has 4584 states and 16210 transitions. Word has length 16 [2023-12-02 14:49:52,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:52,565 INFO L495 AbstractCegarLoop]: Abstraction has 4584 states and 16210 transitions. [2023-12-02 14:49:52,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 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 14:49:52,565 INFO L276 IsEmpty]: Start isEmpty. Operand 4584 states and 16210 transitions. [2023-12-02 14:49:52,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 14:49:52,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:52,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:49:52,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 14:49:52,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 14:49:52,769 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:52,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:52,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1602431224, now seen corresponding path program 1 times [2023-12-02 14:49:52,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:52,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967684009] [2023-12-02 14:49:52,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:52,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:52,903 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 14:49:52,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:52,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967684009] [2023-12-02 14:49:52,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967684009] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:49:52,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159571502] [2023-12-02 14:49:52,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:52,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:52,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:52,907 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:49:52,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 14:49:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:52,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 14:49:53,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 14:49:53,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:49:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 14:49:53,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159571502] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:49:53,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1267289042] [2023-12-02 14:49:53,163 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) [2023-12-02 14:49:53,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:49:53,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-12-02 14:49:53,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905596001] [2023-12-02 14:49:53,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:49:53,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 14:49:53,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:53,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 14:49:53,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-12-02 14:49:53,165 INFO L87 Difference]: Start difference. First operand 4584 states and 16210 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 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 14:49:53,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:53,449 INFO L93 Difference]: Finished difference Result 3416 states and 11823 transitions. [2023-12-02 14:49:53,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:49:53,449 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 14:49:53,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:53,458 INFO L225 Difference]: With dead ends: 3416 [2023-12-02 14:49:53,458 INFO L226 Difference]: Without dead ends: 3115 [2023-12-02 14:49:53,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-02 14:49:53,459 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 150 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:53,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 122 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:49:53,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2023-12-02 14:49:53,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 3113. [2023-12-02 14:49:53,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3113 states, 3108 states have (on average 3.527992277992278) internal successors, (10965), 3112 states have internal predecessors, (10965), 0 states have call successors, (0), 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 14:49:53,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3113 states to 3113 states and 10965 transitions. [2023-12-02 14:49:53,546 INFO L78 Accepts]: Start accepts. Automaton has 3113 states and 10965 transitions. Word has length 18 [2023-12-02 14:49:53,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:53,546 INFO L495 AbstractCegarLoop]: Abstraction has 3113 states and 10965 transitions. [2023-12-02 14:49:53,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 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 14:49:53,546 INFO L276 IsEmpty]: Start isEmpty. Operand 3113 states and 10965 transitions. [2023-12-02 14:49:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 14:49:53,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:53,548 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-02 14:49:53,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 14:49:53,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 14:49:53,749 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:53,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:53,750 INFO L85 PathProgramCache]: Analyzing trace with hash -118795578, now seen corresponding path program 1 times [2023-12-02 14:49:53,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:53,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203507476] [2023-12-02 14:49:53,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:53,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 14:49:53,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:53,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203507476] [2023-12-02 14:49:53,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203507476] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:49:53,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358487221] [2023-12-02 14:49:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:53,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:53,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:53,838 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:49:53,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 14:49:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:53,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 14:49:53,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 14:49:53,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:49:54,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 14:49:54,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358487221] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:49:54,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [282149549] [2023-12-02 14:49:54,012 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) [2023-12-02 14:49:54,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:49:54,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-12-02 14:49:54,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176172469] [2023-12-02 14:49:54,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:49:54,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 14:49:54,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:54,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 14:49:54,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-02 14:49:54,015 INFO L87 Difference]: Start difference. First operand 3113 states and 10965 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 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 14:49:54,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:54,362 INFO L93 Difference]: Finished difference Result 6503 states and 23445 transitions. [2023-12-02 14:49:54,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 14:49:54,362 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 14:49:54,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:54,382 INFO L225 Difference]: With dead ends: 6503 [2023-12-02 14:49:54,382 INFO L226 Difference]: Without dead ends: 6503 [2023-12-02 14:49:54,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-12-02 14:49:54,383 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 243 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:54,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 194 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 14:49:54,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6503 states. [2023-12-02 14:49:54,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6503 to 6503. [2023-12-02 14:49:54,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6503 states, 6498 states have (on average 3.60803324099723) internal successors, (23445), 6502 states have internal predecessors, (23445), 0 states have call successors, (0), 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 14:49:54,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6503 states to 6503 states and 23445 transitions. [2023-12-02 14:49:54,611 INFO L78 Accepts]: Start accepts. Automaton has 6503 states and 23445 transitions. Word has length 20 [2023-12-02 14:49:54,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:54,611 INFO L495 AbstractCegarLoop]: Abstraction has 6503 states and 23445 transitions. [2023-12-02 14:49:54,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 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 14:49:54,612 INFO L276 IsEmpty]: Start isEmpty. Operand 6503 states and 23445 transitions. [2023-12-02 14:49:54,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 14:49:54,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:54,614 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:49:54,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 14:49:54,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 14:49:54,815 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:54,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:54,816 INFO L85 PathProgramCache]: Analyzing trace with hash 24318005, now seen corresponding path program 2 times [2023-12-02 14:49:54,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:54,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219323826] [2023-12-02 14:49:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:54,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 14:49:54,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:54,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219323826] [2023-12-02 14:49:54,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219323826] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:49:54,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154643536] [2023-12-02 14:49:54,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:49:54,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:54,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:54,893 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:49:54,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 14:49:54,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 14:49:54,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:49:54,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:49:55,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 14:49:55,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:49:55,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154643536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:49:55,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:49:55,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-12-02 14:49:55,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862734045] [2023-12-02 14:49:55,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:49:55,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:49:55,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:55,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:49:55,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-02 14:49:55,033 INFO L87 Difference]: Start difference. First operand 6503 states and 23445 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:49:55,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:55,153 INFO L93 Difference]: Finished difference Result 6041 states and 21799 transitions. [2023-12-02 14:49:55,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:49:55,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-02 14:49:55,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:55,168 INFO L225 Difference]: With dead ends: 6041 [2023-12-02 14:49:55,168 INFO L226 Difference]: Without dead ends: 6041 [2023-12-02 14:49:55,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-02 14:49:55,169 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 66 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:55,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 45 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:49:55,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6041 states. [2023-12-02 14:49:55,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6041 to 6041. [2023-12-02 14:49:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6041 states, 6038 states have (on average 3.6103014243126865) internal successors, (21799), 6040 states have internal predecessors, (21799), 0 states have call successors, (0), 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 14:49:55,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6041 states to 6041 states and 21799 transitions. [2023-12-02 14:49:55,310 INFO L78 Accepts]: Start accepts. Automaton has 6041 states and 21799 transitions. Word has length 21 [2023-12-02 14:49:55,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:55,311 INFO L495 AbstractCegarLoop]: Abstraction has 6041 states and 21799 transitions. [2023-12-02 14:49:55,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:49:55,311 INFO L276 IsEmpty]: Start isEmpty. Operand 6041 states and 21799 transitions. [2023-12-02 14:49:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 14:49:55,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:55,314 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:49:55,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 14:49:55,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 14:49:55,515 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:55,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:55,516 INFO L85 PathProgramCache]: Analyzing trace with hash 753858672, now seen corresponding path program 1 times [2023-12-02 14:49:55,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:55,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916889968] [2023-12-02 14:49:55,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:55,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 14:49:55,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:55,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916889968] [2023-12-02 14:49:55,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916889968] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:49:55,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24981643] [2023-12-02 14:49:55,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:55,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:55,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:55,593 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:49:55,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 14:49:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:55,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 14:49:55,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:55,874 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:55,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:49:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:56,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24981643] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:49:56,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1999469399] [2023-12-02 14:49:56,083 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) [2023-12-02 14:49:56,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:49:56,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 24 [2023-12-02 14:49:56,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259152415] [2023-12-02 14:49:56,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:49:56,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 14:49:56,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:56,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 14:49:56,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2023-12-02 14:49:56,087 INFO L87 Difference]: Start difference. First operand 6041 states and 21799 transitions. Second operand has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 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 14:49:57,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:57,032 INFO L93 Difference]: Finished difference Result 12511 states and 44618 transitions. [2023-12-02 14:49:57,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 14:49:57,033 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 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 22 [2023-12-02 14:49:57,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:57,068 INFO L225 Difference]: With dead ends: 12511 [2023-12-02 14:49:57,068 INFO L226 Difference]: Without dead ends: 12299 [2023-12-02 14:49:57,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2023-12-02 14:49:57,069 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 450 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:57,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 399 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 14:49:57,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12299 states. [2023-12-02 14:49:57,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12299 to 11433. [2023-12-02 14:49:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11433 states, 11430 states have (on average 3.6221347331583553) internal successors, (41401), 11432 states have internal predecessors, (41401), 0 states have call successors, (0), 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 14:49:57,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11433 states to 11433 states and 41401 transitions. [2023-12-02 14:49:57,308 INFO L78 Accepts]: Start accepts. Automaton has 11433 states and 41401 transitions. Word has length 22 [2023-12-02 14:49:57,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:57,308 INFO L495 AbstractCegarLoop]: Abstraction has 11433 states and 41401 transitions. [2023-12-02 14:49:57,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 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 14:49:57,309 INFO L276 IsEmpty]: Start isEmpty. Operand 11433 states and 41401 transitions. [2023-12-02 14:49:57,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 14:49:57,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:57,318 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:49:57,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-02 14:49:57,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 14:49:57,519 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:57,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:57,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1689316900, now seen corresponding path program 2 times [2023-12-02 14:49:57,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:57,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457665142] [2023-12-02 14:49:57,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:57,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:57,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:57,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457665142] [2023-12-02 14:49:57,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457665142] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:49:57,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598691317] [2023-12-02 14:49:57,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:49:57,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:57,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:57,851 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:49:57,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 14:49:57,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 14:49:57,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:49:57,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:49:57,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-02 14:49:58,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:49:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-02 14:49:58,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598691317] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:49:58,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [21261277] [2023-12-02 14:49:58,069 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) [2023-12-02 14:49:58,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:49:58,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 3, 3] total 17 [2023-12-02 14:49:58,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992693946] [2023-12-02 14:49:58,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:49:58,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 14:49:58,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:58,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 14:49:58,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-12-02 14:49:58,071 INFO L87 Difference]: Start difference. First operand 11433 states and 41401 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 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 14:49:58,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:58,812 INFO L93 Difference]: Finished difference Result 17009 states and 61521 transitions. [2023-12-02 14:49:58,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 14:49:58,812 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 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 30 [2023-12-02 14:49:58,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:58,850 INFO L225 Difference]: With dead ends: 17009 [2023-12-02 14:49:58,850 INFO L226 Difference]: Without dead ends: 16165 [2023-12-02 14:49:58,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2023-12-02 14:49:58,852 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 266 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:58,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 441 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 14:49:58,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16165 states. [2023-12-02 14:49:59,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16165 to 8819. [2023-12-02 14:49:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8819 states, 8818 states have (on average 3.5051031980040825) internal successors, (30908), 8818 states have internal predecessors, (30908), 0 states have call successors, (0), 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 14:49:59,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8819 states to 8819 states and 30908 transitions. [2023-12-02 14:49:59,196 INFO L78 Accepts]: Start accepts. Automaton has 8819 states and 30908 transitions. Word has length 30 [2023-12-02 14:49:59,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:59,196 INFO L495 AbstractCegarLoop]: Abstraction has 8819 states and 30908 transitions. [2023-12-02 14:49:59,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 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 14:49:59,196 INFO L276 IsEmpty]: Start isEmpty. Operand 8819 states and 30908 transitions. [2023-12-02 14:49:59,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 14:49:59,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:59,219 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 14:49:59,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 14:49:59,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 14:49:59,419 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-12-02 14:49:59,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:59,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1113679150, now seen corresponding path program 2 times [2023-12-02 14:49:59,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:59,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621776459] [2023-12-02 14:49:59,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:59,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-02 14:49:59,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:49:59,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621776459] [2023-12-02 14:49:59,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621776459] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:49:59,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146940713] [2023-12-02 14:49:59,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:49:59,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:59,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:59,614 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:49:59,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 14:49:59,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 14:49:59,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:49:59,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:49:59,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-02 14:49:59,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:49:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-02 14:49:59,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146940713] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:49:59,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1563765475] [2023-12-02 14:49:59,858 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) [2023-12-02 14:49:59,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:49:59,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2023-12-02 14:49:59,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327220297] [2023-12-02 14:49:59,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:49:59,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 14:49:59,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:49:59,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 14:49:59,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-02 14:49:59,861 INFO L87 Difference]: Start difference. First operand 8819 states and 30908 transitions. Second operand has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 14:50:00,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:50:00,315 INFO L93 Difference]: Finished difference Result 11405 states and 39774 transitions. [2023-12-02 14:50:00,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 14:50:00,316 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 35 [2023-12-02 14:50:00,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:50:00,316 INFO L225 Difference]: With dead ends: 11405 [2023-12-02 14:50:00,316 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 14:50:00,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2023-12-02 14:50:00,317 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 245 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:50:00,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 132 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 14:50:00,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 14:50:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 14:50:00,318 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) [2023-12-02 14:50:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 14:50:00,318 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2023-12-02 14:50:00,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:50:00,319 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 14:50:00,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 14:50:00,319 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 14:50:00,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 14:50:00,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2023-12-02 14:50:00,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-12-02 14:50:00,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-12-02 14:50:00,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-12-02 14:50:00,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-12-02 14:50:00,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-12-02 14:50:00,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-12-02 14:50:00,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-12-02 14:50:00,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2023-12-02 14:50:00,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2023-12-02 14:50:00,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2023-12-02 14:50:00,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-12-02 14:50:00,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-12-02 14:50:00,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-12-02 14:50:00,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-12-02 14:50:00,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-12-02 14:50:00,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-12-02 14:50:00,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 14:50:00,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:50:00,526 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:50:00,529 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-02 14:50:00,529 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 14:50:00,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:50:00 BasicIcfg [2023-12-02 14:50:00,532 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 14:50:00,533 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 14:50:00,533 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 14:50:00,533 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 14:50:00,534 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:49:44" (3/4) ... [2023-12-02 14:50:00,536 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 14:50:00,539 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-12-02 14:50:00,539 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-12-02 14:50:00,539 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-12-02 14:50:00,545 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 96 nodes and edges [2023-12-02 14:50:00,546 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-12-02 14:50:00,546 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-12-02 14:50:00,547 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-12-02 14:50:00,644 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 14:50:00,645 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 14:50:00,646 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 14:50:00,646 INFO L158 Benchmark]: Toolchain (without parser) took 16858.81ms. Allocated memory was 155.2MB in the beginning and 935.3MB in the end (delta: 780.1MB). Free memory was 109.6MB in the beginning and 485.8MB in the end (delta: -376.2MB). Peak memory consumption was 405.5MB. Max. memory is 16.1GB. [2023-12-02 14:50:00,647 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 115.3MB. Free memory was 78.8MB in the beginning and 78.8MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:50:00,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.38ms. Allocated memory is still 155.2MB. Free memory was 109.6MB in the beginning and 97.8MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 14:50:00,648 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.68ms. Allocated memory is still 155.2MB. Free memory was 97.8MB in the beginning and 95.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:50:00,648 INFO L158 Benchmark]: Boogie Preprocessor took 33.71ms. Allocated memory is still 155.2MB. Free memory was 95.7MB in the beginning and 94.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:50:00,649 INFO L158 Benchmark]: RCFGBuilder took 702.09ms. Allocated memory is still 155.2MB. Free memory was 94.4MB in the beginning and 110.3MB in the end (delta: -15.9MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-12-02 14:50:00,649 INFO L158 Benchmark]: TraceAbstraction took 15668.33ms. Allocated memory was 155.2MB in the beginning and 935.3MB in the end (delta: 780.1MB). Free memory was 110.3MB in the beginning and 491.0MB in the end (delta: -380.7MB). Peak memory consumption was 399.3MB. Max. memory is 16.1GB. [2023-12-02 14:50:00,650 INFO L158 Benchmark]: Witness Printer took 112.51ms. Allocated memory is still 935.3MB. Free memory was 491.0MB in the beginning and 485.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 14:50:00,652 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 115.3MB. Free memory was 78.8MB in the beginning and 78.8MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.38ms. Allocated memory is still 155.2MB. Free memory was 109.6MB in the beginning and 97.8MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.68ms. Allocated memory is still 155.2MB. Free memory was 97.8MB in the beginning and 95.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.71ms. Allocated memory is still 155.2MB. Free memory was 95.7MB in the beginning and 94.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 702.09ms. Allocated memory is still 155.2MB. Free memory was 94.4MB in the beginning and 110.3MB in the end (delta: -15.9MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 15668.33ms. Allocated memory was 155.2MB in the beginning and 935.3MB in the end (delta: 780.1MB). Free memory was 110.3MB in the beginning and 491.0MB in the end (delta: -380.7MB). Peak memory consumption was 399.3MB. Max. memory is 16.1GB. * Witness Printer took 112.51ms. Allocated memory is still 935.3MB. Free memory was 491.0MB in the beginning and 485.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: 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 7 procedures, 76 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 15.6s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2095 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2095 mSDsluCounter, 2412 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2033 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6209 IncrementalHoareTripleChecker+Invalid, 6237 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 379 mSDtfsCounter, 6209 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 512 GetRequests, 289 SyntacticMatches, 7 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11433occurred in iteration=14, InterpolantAutomatonStates: 143, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 16 MinimizatonAttempts, 9283 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 462 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 591 ConstructedInterpolants, 0 QuantifiedInterpolants, 1927 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1482 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 35 InterpolantComputations, 8 PerfectInterpolantSequences, 272/460 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-02 14:50:00,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ffc601f-1eb5-4025-a48b-24f7163a7080/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE